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Finding the Fourth Proportional to 366,565.20, 549,847.80 and 129,931.80

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Solution

The fourth proportional to 366,565.20, 549,847.80 and 129,931.80 is: 194,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,565.20 : 549,847.80 = 129,931.80 : x
  2. Step 2: Convert to fraction form
    366,565.20/549,847.80 = 129,931.80/x
  3. Step 3: Cross multiply
    366,565.20x = 549,847.80 × 129,931.80
  4. Step 4: Simplify right side
    366,565.20x = 71,442,714,380.04
  5. Step 5: Solve for x
    x = 71,442,714,380.04/366,565.20
  6. Step 6: Final answer
    x = 194,897.70

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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.