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Finding the Fourth Proportional to 283,616.60, 391,390.11 and 156,292.16

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Solution

The fourth proportional to 283,616.60, 391,390.11 and 156,292.16 is: 215,682.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,616.60 : 391,390.11 = 156,292.16 : x
  2. Step 2: Convert to fraction form
    283,616.60/391,390.11 = 156,292.16/x
  3. Step 3: Cross multiply
    283,616.60x = 391,390.11 × 156,292.16
  4. Step 4: Simplify right side
    283,616.60x = 61,171,203,737.59
  5. Step 5: Solve for x
    x = 61,171,203,737.59/283,616.60
  6. Step 6: Final answer
    x = 215,682.74

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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.