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Finding the Fourth Proportional to 79,572.13, 109,806.99 and 43,762.03

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Solution

The fourth proportional to 79,572.13, 109,806.99 and 43,762.03 is: 60,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,572.13 : 109,806.99 = 43,762.03 : x
  2. Step 2: Convert to fraction form
    79,572.13/109,806.99 = 43,762.03/x
  3. Step 3: Cross multiply
    79,572.13x = 109,806.99 × 43,762.03
  4. Step 4: Simplify right side
    79,572.13x = 4,805,376,790.59
  5. Step 5: Solve for x
    x = 4,805,376,790.59/79,572.13
  6. Step 6: Final answer
    x = 60,390.20

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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.