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Finding the Fourth Proportional to 124,580.53, 171,921.29 and 67,991.91

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Solution

The fourth proportional to 124,580.53, 171,921.29 and 67,991.91 is: 93,828.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,580.53 : 171,921.29 = 67,991.91 : x
  2. Step 2: Convert to fraction form
    124,580.53/171,921.29 = 67,991.91/x
  3. Step 3: Cross multiply
    124,580.53x = 171,921.29 × 67,991.91
  4. Step 4: Simplify right side
    124,580.53x = 11,689,255,892.10
  5. Step 5: Solve for x
    x = 11,689,255,892.10/124,580.53
  6. Step 6: Final answer
    x = 93,828.91

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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.