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Finding the Fourth Proportional to 124,664.87, 172,049.97 and 74,363.87

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Solution

The fourth proportional to 124,664.87, 172,049.97 and 74,363.87 is: 102,629.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,664.87 : 172,049.97 = 74,363.87 : x
  2. Step 2: Convert to fraction form
    124,664.87/172,049.97 = 74,363.87/x
  3. Step 3: Cross multiply
    124,664.87x = 172,049.97 × 74,363.87
  4. Step 4: Simplify right side
    124,664.87x = 12,794,301,172.46
  5. Step 5: Solve for x
    x = 12,794,301,172.46/124,664.87
  6. Step 6: Final answer
    x = 102,629.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.