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Finding the Fourth Proportional to 79,218.65, 118,747.97 and 49,657.23

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Solution

The fourth proportional to 79,218.65, 118,747.97 and 49,657.23 is: 74,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,218.65 : 118,747.97 = 49,657.23 : x
  2. Step 2: Convert to fraction form
    79,218.65/118,747.97 = 49,657.23/x
  3. Step 3: Cross multiply
    79,218.65x = 118,747.97 × 49,657.23
  4. Step 4: Simplify right side
    79,218.65x = 5,896,695,010.04
  5. Step 5: Solve for x
    x = 5,896,695,010.04/79,218.65
  6. Step 6: Final answer
    x = 74,435.69

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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.