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Finding the Fourth Proportional to 174,258.80, 261,042.60 and 103,929.20

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Solution

The fourth proportional to 174,258.80, 261,042.60 and 103,929.20 is: 155,687.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,258.80 : 261,042.60 = 103,929.20 : x
  2. Step 2: Convert to fraction form
    174,258.80/261,042.60 = 103,929.20/x
  3. Step 3: Cross multiply
    174,258.80x = 261,042.60 × 103,929.20
  4. Step 4: Simplify right side
    174,258.80x = 27,129,948,583.92
  5. Step 5: Solve for x
    x = 27,129,948,583.92/174,258.80
  6. Step 6: Final answer
    x = 155,687.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.