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Finding the Fourth Proportional to 52,813.92, 79,136.64 and 38,708.64

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Solution

The fourth proportional to 52,813.92, 79,136.64 and 38,708.64 is: 58,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,813.92 : 79,136.64 = 38,708.64 : x
  2. Step 2: Convert to fraction form
    52,813.92/79,136.64 = 38,708.64/x
  3. Step 3: Cross multiply
    52,813.92x = 79,136.64 × 38,708.64
  4. Step 4: Simplify right side
    52,813.92x = 3,063,271,708.57
  5. Step 5: Solve for x
    x = 3,063,271,708.57/52,813.92
  6. Step 6: Final answer
    x = 58,001.22

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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.