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Finding the Fourth Proportional to 96,909.62, 145,420.59 and 40,745.30

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Solution

The fourth proportional to 96,909.62, 145,420.59 and 40,745.30 is: 61,141.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,909.62 : 145,420.59 = 40,745.30 : x
  2. Step 2: Convert to fraction form
    96,909.62/145,420.59 = 40,745.30/x
  3. Step 3: Cross multiply
    96,909.62x = 145,420.59 × 40,745.30
  4. Step 4: Simplify right side
    96,909.62x = 5,925,205,565.73
  5. Step 5: Solve for x
    x = 5,925,205,565.73/96,909.62
  6. Step 6: Final answer
    x = 61,141.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.