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Finding the Fourth Proportional to 621,805.70, 932,708.55 and 486,503.30

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Solution

The fourth proportional to 621,805.70, 932,708.55 and 486,503.30 is: 729,754.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,805.70 : 932,708.55 = 486,503.30 : x
  2. Step 2: Convert to fraction form
    621,805.70/932,708.55 = 486,503.30/x
  3. Step 3: Cross multiply
    621,805.70x = 932,708.55 × 486,503.30
  4. Step 4: Simplify right side
    621,805.70x = 453,765,787,513.22
  5. Step 5: Solve for x
    x = 453,765,787,513.22/621,805.70
  6. Step 6: Final answer
    x = 729,754.95

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Similar ratio
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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.