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Finding the Fourth Proportional to 108,543.71, 149,785.97 and 60,794.61

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Solution

The fourth proportional to 108,543.71, 149,785.97 and 60,794.61 is: 83,894.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,543.71 : 149,785.97 = 60,794.61 : x
  2. Step 2: Convert to fraction form
    108,543.71/149,785.97 = 60,794.61/x
  3. Step 3: Cross multiply
    108,543.71x = 149,785.97 × 60,794.61
  4. Step 4: Simplify right side
    108,543.71x = 9,106,179,325.65
  5. Step 5: Solve for x
    x = 9,106,179,325.65/108,543.71
  6. Step 6: Final answer
    x = 83,894.13

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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.