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Finding the Fourth Proportional to 107,243.88, 148,009.32 and 61,932.88

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Solution

The fourth proportional to 107,243.88, 148,009.32 and 61,932.88 is: 85,474.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,243.88 : 148,009.32 = 61,932.88 : x
  2. Step 2: Convert to fraction form
    107,243.88/148,009.32 = 61,932.88/x
  3. Step 3: Cross multiply
    107,243.88x = 148,009.32 × 61,932.88
  4. Step 4: Simplify right side
    107,243.88x = 9,166,643,454.44
  5. Step 5: Solve for x
    x = 9,166,643,454.44/107,243.88
  6. Step 6: Final answer
    x = 85,474.75

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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.