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Finding the Fourth Proportional to 156,105.80, 215,372.92 and 88,114.76

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Solution

The fourth proportional to 156,105.80, 215,372.92 and 88,114.76 is: 121,568.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,105.80 : 215,372.92 = 88,114.76 : x
  2. Step 2: Convert to fraction form
    156,105.80/215,372.92 = 88,114.76/x
  3. Step 3: Cross multiply
    156,105.80x = 215,372.92 × 88,114.76
  4. Step 4: Simplify right side
    156,105.80x = 18,977,533,156.30
  5. Step 5: Solve for x
    x = 18,977,533,156.30/156,105.80
  6. Step 6: Final answer
    x = 121,568.41

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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.