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Finding the Fourth Proportional to 1,013,615,450.04, 1,398,789,320.94 and 550,041,434.04

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Solution

The fourth proportional to 1,013,615,450.04, 1,398,789,320.94 and 550,041,434.04 is: 759,057,178.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013,615,450.04 : 1,398,789,320.94 = 550,041,434.04 : x
  2. Step 2: Convert to fraction form
    1,013,615,450.04/1,398,789,320.94 = 550,041,434.04/x
  3. Step 3: Cross multiply
    1,013,615,450.04x = 1,398,789,320.94 × 550,041,434.04
  4. Step 4: Simplify right side
    1,013,615,450.04x = 769,392,084,009,675,392
  5. Step 5: Solve for x
    x = 769,392,084,009,675,392/1,013,615,450.04
  6. Step 6: Final answer
    x = 759,057,178.91

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Double scale
Find fourth proportional to 1,013,615,451.04, 1,398,789,322.32 and 550,041,435.04
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.