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Finding the Fourth Proportional to 79,572.90, 109,808.43 and 43,762.92

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Solution

The fourth proportional to 79,572.90, 109,808.43 and 43,762.92 is: 60,391.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,572.90 : 109,808.43 = 43,762.92 : x
  2. Step 2: Convert to fraction form
    79,572.90/109,808.43 = 43,762.92/x
  3. Step 3: Cross multiply
    79,572.90x = 109,808.43 × 43,762.92
  4. Step 4: Simplify right side
    79,572.90x = 4,805,537,537.42
  5. Step 5: Solve for x
    x = 4,805,537,537.42/79,572.90
  6. Step 6: Final answer
    x = 60,391.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.