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Finding the Fourth Proportional to 98,372.89, 135,754.60 and 55,934.02

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Solution

The fourth proportional to 98,372.89, 135,754.60 and 55,934.02 is: 77,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,372.89 : 135,754.60 = 55,934.02 : x
  2. Step 2: Convert to fraction form
    98,372.89/135,754.60 = 55,934.02/x
  3. Step 3: Cross multiply
    98,372.89x = 135,754.60 × 55,934.02
  4. Step 4: Simplify right side
    98,372.89x = 7,593,299,832.72
  5. Step 5: Solve for x
    x = 7,593,299,832.72/98,372.89
  6. Step 6: Final answer
    x = 77,188.95

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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.