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Finding the Fourth Proportional to 124,606.52, 171,904.92 and 81,596.60

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Solution

The fourth proportional to 124,606.52, 171,904.92 and 81,596.60 is: 112,569.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,606.52 : 171,904.92 = 81,596.60 : x
  2. Step 2: Convert to fraction form
    124,606.52/171,904.92 = 81,596.60/x
  3. Step 3: Cross multiply
    124,606.52x = 171,904.92 × 81,596.60
  4. Step 4: Simplify right side
    124,606.52x = 14,026,856,995.27
  5. Step 5: Solve for x
    x = 14,026,856,995.27/124,606.52
  6. Step 6: Final answer
    x = 112,569.21

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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.