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Finding the Fourth Proportional to 115,932.88, 160,805.88 and 112,860.15

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Solution

The fourth proportional to 115,932.88, 160,805.88 and 112,860.15 is: 156,543.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,932.88 : 160,805.88 = 112,860.15 : x
  2. Step 2: Convert to fraction form
    115,932.88/160,805.88 = 112,860.15/x
  3. Step 3: Cross multiply
    115,932.88x = 160,805.88 × 112,860.15
  4. Step 4: Simplify right side
    115,932.88x = 18,148,575,737.68
  5. Step 5: Solve for x
    x = 18,148,575,737.68/115,932.88
  6. Step 6: Final answer
    x = 156,543.82

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.