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Finding the Fourth Proportional to 107,447.61, 161,171.22 and 28,561.83

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Solution

The fourth proportional to 107,447.61, 161,171.22 and 28,561.83 is: 42,842.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,447.61 : 161,171.22 = 28,561.83 : x
  2. Step 2: Convert to fraction form
    107,447.61/161,171.22 = 28,561.83/x
  3. Step 3: Cross multiply
    107,447.61x = 161,171.22 × 28,561.83
  4. Step 4: Simplify right side
    107,447.61x = 4,603,344,986.53
  5. Step 5: Solve for x
    x = 4,603,344,986.53/107,447.61
  6. Step 6: Final answer
    x = 42,842.69

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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.