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Finding the Fourth Proportional to 79,615.40, 109,866.48 and 43,805.04

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Solution

The fourth proportional to 79,615.40, 109,866.48 and 43,805.04 is: 60,449.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,615.40 : 109,866.48 = 43,805.04 : x
  2. Step 2: Convert to fraction form
    79,615.40/109,866.48 = 43,805.04/x
  3. Step 3: Cross multiply
    79,615.40x = 109,866.48 × 43,805.04
  4. Step 4: Simplify right side
    79,615.40x = 4,812,705,551.06
  5. Step 5: Solve for x
    x = 4,812,705,551.06/79,615.40
  6. Step 6: Final answer
    x = 60,449.43

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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.