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Finding the Fourth Proportional to 108,854.66, 150,209.16 and 61,098.68

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Solution

The fourth proportional to 108,854.66, 150,209.16 and 61,098.68 is: 84,310.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,854.66 : 150,209.16 = 61,098.68 : x
  2. Step 2: Convert to fraction form
    108,854.66/150,209.16 = 61,098.68/x
  3. Step 3: Cross multiply
    108,854.66x = 150,209.16 × 61,098.68
  4. Step 4: Simplify right side
    108,854.66x = 9,177,581,399.91
  5. Step 5: Solve for x
    x = 9,177,581,399.91/108,854.66
  6. Step 6: Final answer
    x = 84,310.41

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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.