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Finding the Fourth Proportional to 84,752.39, 126,971.29 and 60,687.02

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Solution

The fourth proportional to 84,752.39, 126,971.29 and 60,687.02 is: 90,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,752.39 : 126,971.29 = 60,687.02 : x
  2. Step 2: Convert to fraction form
    84,752.39/126,971.29 = 60,687.02/x
  3. Step 3: Cross multiply
    84,752.39x = 126,971.29 × 60,687.02
  4. Step 4: Simplify right side
    84,752.39x = 7,705,509,381.37
  5. Step 5: Solve for x
    x = 7,705,509,381.37/84,752.39
  6. Step 6: Final answer
    x = 90,917.90

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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.