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Finding the Fourth Proportional to 113,188.88, 156,219.90 and 65,471.24

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Solution

The fourth proportional to 113,188.88, 156,219.90 and 65,471.24 is: 90,361.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,188.88 : 156,219.90 = 65,471.24 : x
  2. Step 2: Convert to fraction form
    113,188.88/156,219.90 = 65,471.24/x
  3. Step 3: Cross multiply
    113,188.88x = 156,219.90 × 65,471.24
  4. Step 4: Simplify right side
    113,188.88x = 10,227,910,565.68
  5. Step 5: Solve for x
    x = 10,227,910,565.68/113,188.88
  6. Step 6: Final answer
    x = 90,361.44

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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.