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Finding the Fourth Proportional to 705,659,764.39, 973,811,282.19 and 392,387,252.29

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Solution

The fourth proportional to 705,659,764.39, 973,811,282.19 and 392,387,252.29 is: 541,494,857.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,659,764.39 : 973,811,282.19 = 392,387,252.29 : x
  2. Step 2: Convert to fraction form
    705,659,764.39/973,811,282.19 = 392,387,252.29/x
  3. Step 3: Cross multiply
    705,659,764.39x = 973,811,282.19 × 392,387,252.29
  4. Step 4: Simplify right side
    705,659,764.39x = 382,111,133,267,535,936
  5. Step 5: Solve for x
    x = 382,111,133,267,535,936/705,659,764.39
  6. Step 6: Final answer
    x = 541,494,857.08

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Double scale
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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.