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Finding the Fourth Proportional to 283,595.10, 391,369.60 and 156,278.90

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Solution

The fourth proportional to 283,595.10, 391,369.60 and 156,278.90 is: 215,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,595.10 : 391,369.60 = 156,278.90 : x
  2. Step 2: Convert to fraction form
    283,595.10/391,369.60 = 156,278.90/x
  3. Step 3: Cross multiply
    283,595.10x = 391,369.60 × 156,278.90
  4. Step 4: Simplify right side
    283,595.10x = 61,162,810,581.44
  5. Step 5: Solve for x
    x = 61,162,810,581.44/283,595.10
  6. Step 6: Final answer
    x = 215,669.49

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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.