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Finding the Fourth Proportional to 74,593.80, 112,299.03 and 68,061.96

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Solution

The fourth proportional to 74,593.80, 112,299.03 and 68,061.96 is: 102,465.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,593.80 : 112,299.03 = 68,061.96 : x
  2. Step 2: Convert to fraction form
    74,593.80/112,299.03 = 68,061.96/x
  3. Step 3: Cross multiply
    74,593.80x = 112,299.03 × 68,061.96
  4. Step 4: Simplify right side
    74,593.80x = 7,643,292,087.90
  5. Step 5: Solve for x
    x = 7,643,292,087.90/74,593.80
  6. Step 6: Final answer
    x = 102,465.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.