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Finding the Fourth Proportional to 283,687.49, 391,489.53 and 156,363.59

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Solution

The fourth proportional to 283,687.49, 391,489.53 and 156,363.59 is: 215,782.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,687.49 : 391,489.53 = 156,363.59 : x
  2. Step 2: Convert to fraction form
    283,687.49/391,489.53 = 156,363.59/x
  3. Step 3: Cross multiply
    283,687.49x = 391,489.53 × 156,363.59
  4. Step 4: Simplify right side
    283,687.49x = 61,214,708,358.21
  5. Step 5: Solve for x
    x = 61,214,708,358.21/283,687.49
  6. Step 6: Final answer
    x = 215,782.19

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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.