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Finding the Fourth Proportional to 99,566.97, 137,398.46 and 54,245.31

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Solution

The fourth proportional to 99,566.97, 137,398.46 and 54,245.31 is: 74,856.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,566.97 : 137,398.46 = 54,245.31 : x
  2. Step 2: Convert to fraction form
    99,566.97/137,398.46 = 54,245.31/x
  3. Step 3: Cross multiply
    99,566.97x = 137,398.46 × 54,245.31
  4. Step 4: Simplify right side
    99,566.97x = 7,453,221,785.00
  5. Step 5: Solve for x
    x = 7,453,221,785.00/99,566.97
  6. Step 6: Final answer
    x = 74,856.37

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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.