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Finding the Fourth Proportional to 224,445.70, 309,642.13 and 156,502.90

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Solution

The fourth proportional to 224,445.70, 309,642.13 and 156,502.90 is: 215,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,445.70 : 309,642.13 = 156,502.90 : x
  2. Step 2: Convert to fraction form
    224,445.70/309,642.13 = 156,502.90/x
  3. Step 3: Cross multiply
    224,445.70x = 309,642.13 × 156,502.90
  4. Step 4: Simplify right side
    224,445.70x = 48,459,891,307.18
  5. Step 5: Solve for x
    x = 48,459,891,307.18/224,445.70
  6. Step 6: Final answer
    x = 215,909.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.