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Finding the Fourth Proportional to 74,355.25, 111,532.95 and 61,179.93

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Solution

The fourth proportional to 74,355.25, 111,532.95 and 61,179.93 is: 91,769.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,355.25 : 111,532.95 = 61,179.93 : x
  2. Step 2: Convert to fraction form
    74,355.25/111,532.95 = 61,179.93/x
  3. Step 3: Cross multiply
    74,355.25x = 111,532.95 × 61,179.93
  4. Step 4: Simplify right side
    74,355.25x = 6,823,578,073.69
  5. Step 5: Solve for x
    x = 6,823,578,073.69/74,355.25
  6. Step 6: Final answer
    x = 91,769.96

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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.