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Finding the Fourth Proportional to 532,129.20, 798,193.80 and 521,631.60

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Solution

The fourth proportional to 532,129.20, 798,193.80 and 521,631.60 is: 782,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,129.20 : 798,193.80 = 521,631.60 : x
  2. Step 2: Convert to fraction form
    532,129.20/798,193.80 = 521,631.60/x
  3. Step 3: Cross multiply
    532,129.20x = 798,193.80 × 521,631.60
  4. Step 4: Simplify right side
    532,129.20x = 416,363,109,004.08
  5. Step 5: Solve for x
    x = 416,363,109,004.08/532,129.20
  6. Step 6: Final answer
    x = 782,447.40

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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.