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Finding the Fourth Proportional to 126,685.96, 174,798.88 and 75,691.04

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Solution

The fourth proportional to 126,685.96, 174,798.88 and 75,691.04 is: 104,437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,685.96 : 174,798.88 = 75,691.04 : x
  2. Step 2: Convert to fraction form
    126,685.96/174,798.88 = 75,691.04/x
  3. Step 3: Cross multiply
    126,685.96x = 174,798.88 × 75,691.04
  4. Step 4: Simplify right side
    126,685.96x = 13,230,708,938.06
  5. Step 5: Solve for x
    x = 13,230,708,938.06/126,685.96
  6. Step 6: Final answer
    x = 104,437.06

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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.