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Finding the Fourth Proportional to 71,492.26, 98,659.44 and 39,661.16

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Solution

The fourth proportional to 71,492.26, 98,659.44 and 39,661.16 is: 54,732.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,492.26 : 98,659.44 = 39,661.16 : x
  2. Step 2: Convert to fraction form
    71,492.26/98,659.44 = 39,661.16/x
  3. Step 3: Cross multiply
    71,492.26x = 98,659.44 × 39,661.16
  4. Step 4: Simplify right side
    71,492.26x = 3,912,947,637.04
  5. Step 5: Solve for x
    x = 3,912,947,637.04/71,492.26
  6. Step 6: Final answer
    x = 54,732.47

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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.