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Finding the Fourth Proportional to 124,846.62, 172,304.28 and 71,151

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Solution

The fourth proportional to 124,846.62, 172,304.28 and 71,151 is: 98,197.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,846.62 : 172,304.28 = 71,151 : x
  2. Step 2: Convert to fraction form
    124,846.62/172,304.28 = 71,151/x
  3. Step 3: Cross multiply
    124,846.62x = 172,304.28 × 71,151
  4. Step 4: Simplify right side
    124,846.62x = 12,259,621,826.28
  5. Step 5: Solve for x
    x = 12,259,621,826.28/124,846.62
  6. Step 6: Final answer
    x = 98,197.47

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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.