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Finding the Fourth Proportional to 156,061.88, 215,365.14 and 88,093.16

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Solution

The fourth proportional to 156,061.88, 215,365.14 and 88,093.16 is: 121,568.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,061.88 : 215,365.14 = 88,093.16 : x
  2. Step 2: Convert to fraction form
    156,061.88/215,365.14 = 88,093.16/x
  3. Step 3: Cross multiply
    156,061.88x = 215,365.14 × 88,093.16
  4. Step 4: Simplify right side
    156,061.88x = 18,972,195,736.44
  5. Step 5: Solve for x
    x = 18,972,195,736.44/156,061.88
  6. Step 6: Final answer
    x = 121,568.42

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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.