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Finding the Fourth Proportional to 98,296.84, 135,660.90 and 54,693.72

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Solution

The fourth proportional to 98,296.84, 135,660.90 and 54,693.72 is: 75,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,296.84 : 135,660.90 = 54,693.72 : x
  2. Step 2: Convert to fraction form
    98,296.84/135,660.90 = 54,693.72/x
  3. Step 3: Cross multiply
    98,296.84x = 135,660.90 × 54,693.72
  4. Step 4: Simplify right side
    98,296.84x = 7,419,799,279.55
  5. Step 5: Solve for x
    x = 7,419,799,279.55/98,296.84
  6. Step 6: Final answer
    x = 75,483.60

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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.