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Finding the Fourth Proportional to 98,419.36, 135,883.92 and 60,748.96

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Solution

The fourth proportional to 98,419.36, 135,883.92 and 60,748.96 is: 83,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,419.36 : 135,883.92 = 60,748.96 : x
  2. Step 2: Convert to fraction form
    98,419.36/135,883.92 = 60,748.96/x
  3. Step 3: Cross multiply
    98,419.36x = 135,883.92 × 60,748.96
  4. Step 4: Simplify right side
    98,419.36x = 8,254,806,820.72
  5. Step 5: Solve for x
    x = 8,254,806,820.72/98,419.36
  6. Step 6: Final answer
    x = 83,873.81

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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.