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Finding the Fourth Proportional to 621,820.10, 932,730.15 and 432,863.30

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Solution

The fourth proportional to 621,820.10, 932,730.15 and 432,863.30 is: 649,294.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,820.10 : 932,730.15 = 432,863.30 : x
  2. Step 2: Convert to fraction form
    621,820.10/932,730.15 = 432,863.30/x
  3. Step 3: Cross multiply
    621,820.10x = 932,730.15 × 432,863.30
  4. Step 4: Simplify right side
    621,820.10x = 403,744,650,738.50
  5. Step 5: Solve for x
    x = 403,744,650,738.50/621,820.10
  6. Step 6: Final answer
    x = 649,294.95

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Half scale
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Double scale
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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.