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Finding the Fourth Proportional to 98,754.80, 136,272.84 and 58,469.84

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Solution

The fourth proportional to 98,754.80, 136,272.84 and 58,469.84 is: 80,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,754.80 : 136,272.84 = 58,469.84 : x
  2. Step 2: Convert to fraction form
    98,754.80/136,272.84 = 58,469.84/x
  3. Step 3: Cross multiply
    98,754.80x = 136,272.84 × 58,469.84
  4. Step 4: Simplify right side
    98,754.80x = 7,967,851,151.15
  5. Step 5: Solve for x
    x = 7,967,851,151.15/98,754.80
  6. Step 6: Final answer
    x = 80,683.18

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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.