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Finding the Fourth Proportional to 621,809.70, 932,714.55 and 572,820.90

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Solution

The fourth proportional to 621,809.70, 932,714.55 and 572,820.90 is: 859,231.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,809.70 : 932,714.55 = 572,820.90 : x
  2. Step 2: Convert to fraction form
    621,809.70/932,714.55 = 572,820.90/x
  3. Step 3: Cross multiply
    621,809.70x = 932,714.55 × 572,820.90
  4. Step 4: Simplify right side
    621,809.70x = 534,278,387,974.10
  5. Step 5: Solve for x
    x = 534,278,387,974.10/621,809.70
  6. Step 6: Final answer
    x = 859,231.35

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Similar ratio
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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.