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Finding the Fourth Proportional to 283,752.60, 391,581.32 and 156,432.84

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Solution

The fourth proportional to 283,752.60, 391,581.32 and 156,432.84 is: 215,878.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,752.60 : 391,581.32 = 156,432.84 : x
  2. Step 2: Convert to fraction form
    283,752.60/391,581.32 = 156,432.84/x
  3. Step 3: Cross multiply
    283,752.60x = 391,581.32 × 156,432.84
  4. Step 4: Simplify right side
    283,752.60x = 61,256,177,978.55
  5. Step 5: Solve for x
    x = 61,256,177,978.55/283,752.60
  6. Step 6: Final answer
    x = 215,878.83

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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.