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Finding the Fourth Proportional to 61,987.73, 92,993.13 and 28,685.79

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Solution

The fourth proportional to 61,987.73, 92,993.13 and 28,685.79 is: 43,034.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,987.73 : 92,993.13 = 28,685.79 : x
  2. Step 2: Convert to fraction form
    61,987.73/92,993.13 = 28,685.79/x
  3. Step 3: Cross multiply
    61,987.73x = 92,993.13 × 28,685.79
  4. Step 4: Simplify right side
    61,987.73x = 2,667,581,398.62
  5. Step 5: Solve for x
    x = 2,667,581,398.62/61,987.73
  6. Step 6: Final answer
    x = 43,034.03

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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.