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Finding the Fourth Proportional to 73,139.64, 100,939.86 and 44,456.79

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Solution

The fourth proportional to 73,139.64, 100,939.86 and 44,456.79 is: 61,354.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,139.64 : 100,939.86 = 44,456.79 : x
  2. Step 2: Convert to fraction form
    73,139.64/100,939.86 = 44,456.79/x
  3. Step 3: Cross multiply
    73,139.64x = 100,939.86 × 44,456.79
  4. Step 4: Simplify right side
    73,139.64x = 4,487,462,158.65
  5. Step 5: Solve for x
    x = 4,487,462,158.65/73,139.64
  6. Step 6: Final answer
    x = 61,354.72

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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.