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Finding the Fourth Proportional to 124,543.97, 171,874.46 and 70,836.71

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Solution

The fourth proportional to 124,543.97, 171,874.46 and 70,836.71 is: 97,756.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,543.97 : 171,874.46 = 70,836.71 : x
  2. Step 2: Convert to fraction form
    124,543.97/171,874.46 = 70,836.71/x
  3. Step 3: Cross multiply
    124,543.97x = 171,874.46 × 70,836.71
  4. Step 4: Simplify right side
    124,543.97x = 12,175,021,886.20
  5. Step 5: Solve for x
    x = 12,175,021,886.20/124,543.97
  6. Step 6: Final answer
    x = 97,756.82

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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.