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Finding the Fourth Proportional to 79,538.46, 109,763.15 and 43,729.08

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Solution

The fourth proportional to 79,538.46, 109,763.15 and 43,729.08 is: 60,346.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,538.46 : 109,763.15 = 43,729.08 : x
  2. Step 2: Convert to fraction form
    79,538.46/109,763.15 = 43,729.08/x
  3. Step 3: Cross multiply
    79,538.46x = 109,763.15 × 43,729.08
  4. Step 4: Simplify right side
    79,538.46x = 4,799,841,348.76
  5. Step 5: Solve for x
    x = 4,799,841,348.76/79,538.46
  6. Step 6: Final answer
    x = 60,346.17

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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.