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Finding the Fourth Proportional to 620,764.77, 931,798.70 and 550,139.25

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Solution

The fourth proportional to 620,764.77, 931,798.70 and 550,139.25 is: 825,786.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,764.77 : 931,798.70 = 550,139.25 : x
  2. Step 2: Convert to fraction form
    620,764.77/931,798.70 = 550,139.25/x
  3. Step 3: Cross multiply
    620,764.77x = 931,798.70 × 550,139.25
  4. Step 4: Simplify right side
    620,764.77x = 512,619,035,218.28
  5. Step 5: Solve for x
    x = 512,619,035,218.28/620,764.77
  6. Step 6: Final answer
    x = 825,786.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.