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Finding the Fourth Proportional to 52,812.48, 79,221.24 and 13,369.92

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Solution

The fourth proportional to 52,812.48, 79,221.24 and 13,369.92 is: 20,055.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,812.48 : 79,221.24 = 13,369.92 : x
  2. Step 2: Convert to fraction form
    52,812.48/79,221.24 = 13,369.92/x
  3. Step 3: Cross multiply
    52,812.48x = 79,221.24 × 13,369.92
  4. Step 4: Simplify right side
    52,812.48x = 1,059,181,641.10
  5. Step 5: Solve for x
    x = 1,059,181,641.10/52,812.48
  6. Step 6: Final answer
    x = 20,055.52

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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.