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Finding the Fourth Proportional to 125,080.60, 172,610.94 and 68,491.48

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Solution

The fourth proportional to 125,080.60, 172,610.94 and 68,491.48 is: 94,518.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,080.60 : 172,610.94 = 68,491.48 : x
  2. Step 2: Convert to fraction form
    125,080.60/172,610.94 = 68,491.48/x
  3. Step 3: Cross multiply
    125,080.60x = 172,610.94 × 68,491.48
  4. Step 4: Simplify right side
    125,080.60x = 11,822,378,744.79
  5. Step 5: Solve for x
    x = 11,822,378,744.79/125,080.60
  6. Step 6: Final answer
    x = 94,518.08

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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.