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Finding the Fourth Proportional to 74,572.55, 111,858.81 and 61,397.26

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Solution

The fourth proportional to 74,572.55, 111,858.81 and 61,397.26 is: 92,095.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,572.55 : 111,858.81 = 61,397.26 : x
  2. Step 2: Convert to fraction form
    74,572.55/111,858.81 = 61,397.26/x
  3. Step 3: Cross multiply
    74,572.55x = 111,858.81 × 61,397.26
  4. Step 4: Simplify right side
    74,572.55x = 6,867,823,930.97
  5. Step 5: Solve for x
    x = 6,867,823,930.97/74,572.55
  6. Step 6: Final answer
    x = 92,095.87

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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.