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Finding the Fourth Proportional to 157,617.80, 236,645.40 and 98,568.80

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Solution

The fourth proportional to 157,617.80, 236,645.40 and 98,568.80 is: 147,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,617.80 : 236,645.40 = 98,568.80 : x
  2. Step 2: Convert to fraction form
    157,617.80/236,645.40 = 98,568.80/x
  3. Step 3: Cross multiply
    157,617.80x = 236,645.40 × 98,568.80
  4. Step 4: Simplify right side
    157,617.80x = 23,325,853,103.52
  5. Step 5: Solve for x
    x = 23,325,853,103.52/157,617.80
  6. Step 6: Final answer
    x = 147,989.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.