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Finding the Fourth Proportional to 122,693.44, 169,305.24 and 71,718.10

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Solution

The fourth proportional to 122,693.44, 169,305.24 and 71,718.10 is: 98,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,693.44 : 169,305.24 = 71,718.10 : x
  2. Step 2: Convert to fraction form
    122,693.44/169,305.24 = 71,718.10/x
  3. Step 3: Cross multiply
    122,693.44x = 169,305.24 × 71,718.10
  4. Step 4: Simplify right side
    122,693.44x = 12,142,250,132.84
  5. Step 5: Solve for x
    x = 12,142,250,132.84/122,693.44
  6. Step 6: Final answer
    x = 98,964.13

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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.