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Finding the Fourth Proportional to 73,978.92, 111,208.95 and 59,347.89

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Solution

The fourth proportional to 73,978.92, 111,208.95 and 59,347.89 is: 89,214.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,978.92 : 111,208.95 = 59,347.89 : x
  2. Step 2: Convert to fraction form
    73,978.92/111,208.95 = 59,347.89/x
  3. Step 3: Cross multiply
    73,978.92x = 111,208.95 × 59,347.89
  4. Step 4: Simplify right side
    73,978.92x = 6,600,016,531.62
  5. Step 5: Solve for x
    x = 6,600,016,531.62/73,978.92
  6. Step 6: Final answer
    x = 89,214.83

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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.