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Finding the Fourth Proportional to 283,410.29, 391,123.88 and 156,085.85

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Solution

The fourth proportional to 283,410.29, 391,123.88 and 156,085.85 is: 215,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,410.29 : 391,123.88 = 156,085.85 : x
  2. Step 2: Convert to fraction form
    283,410.29/391,123.88 = 156,085.85/x
  3. Step 3: Cross multiply
    283,410.29x = 391,123.88 × 156,085.85
  4. Step 4: Simplify right side
    283,410.29x = 61,048,900,529.05
  5. Step 5: Solve for x
    x = 61,048,900,529.05/283,410.29
  6. Step 6: Final answer
    x = 215,408.20

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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.