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Finding the Fourth Proportional to 283,656.61, 391,445.31 and 156,332.17

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Solution

The fourth proportional to 283,656.61, 391,445.31 and 156,332.17 is: 215,737.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,656.61 : 391,445.31 = 156,332.17 : x
  2. Step 2: Convert to fraction form
    283,656.61/391,445.31 = 156,332.17/x
  3. Step 3: Cross multiply
    283,656.61x = 391,445.31 × 156,332.17
  4. Step 4: Simplify right side
    283,656.61x = 61,195,494,748.62
  5. Step 5: Solve for x
    x = 61,195,494,748.62/283,656.61
  6. Step 6: Final answer
    x = 215,737.95

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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.