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Finding the Fourth Proportional to 283,410.79, 391,124.56 and 156,086.35

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Solution

The fourth proportional to 283,410.79, 391,124.56 and 156,086.35 is: 215,408.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,410.79 : 391,124.56 = 156,086.35 : x
  2. Step 2: Convert to fraction form
    283,410.79/391,124.56 = 156,086.35/x
  3. Step 3: Cross multiply
    283,410.79x = 391,124.56 × 156,086.35
  4. Step 4: Simplify right side
    283,410.79x = 61,049,204,965.76
  5. Step 5: Solve for x
    x = 61,049,204,965.76/283,410.79
  6. Step 6: Final answer
    x = 215,408.89

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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.