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Finding the Fourth Proportional to 71,777.15, 107,624.69 and 21,842.48

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Solution

The fourth proportional to 71,777.15, 107,624.69 and 21,842.48 is: 32,751.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,777.15 : 107,624.69 = 21,842.48 : x
  2. Step 2: Convert to fraction form
    71,777.15/107,624.69 = 21,842.48/x
  3. Step 3: Cross multiply
    71,777.15x = 107,624.69 × 21,842.48
  4. Step 4: Simplify right side
    71,777.15x = 2,350,789,600.71
  5. Step 5: Solve for x
    x = 2,350,789,600.71/71,777.15
  6. Step 6: Final answer
    x = 32,751.23

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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.