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Finding the Fourth Proportional to 98,839.60, 136,398.43 and 53,517.63

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Solution

The fourth proportional to 98,839.60, 136,398.43 and 53,517.63 is: 73,854.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,839.60 : 136,398.43 = 53,517.63 : x
  2. Step 2: Convert to fraction form
    98,839.60/136,398.43 = 53,517.63/x
  3. Step 3: Cross multiply
    98,839.60x = 136,398.43 × 53,517.63
  4. Step 4: Simplify right side
    98,839.60x = 7,299,720,709.32
  5. Step 5: Solve for x
    x = 7,299,720,709.32/98,839.60
  6. Step 6: Final answer
    x = 73,854.21

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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.