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Finding the Fourth Proportional to 621,819.70, 932,729.55 and 201,138.10

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Solution

The fourth proportional to 621,819.70, 932,729.55 and 201,138.10 is: 301,707.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,819.70 : 932,729.55 = 201,138.10 : x
  2. Step 2: Convert to fraction form
    621,819.70/932,729.55 = 201,138.10/x
  3. Step 3: Cross multiply
    621,819.70x = 932,729.55 × 201,138.10
  4. Step 4: Simplify right side
    621,819.70x = 187,607,449,500.86
  5. Step 5: Solve for x
    x = 187,607,449,500.86/621,819.70
  6. Step 6: Final answer
    x = 301,707.15

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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.