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Finding the Fourth Proportional to 168,729.60, 253,132.80 and 98,572.80

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Solution

The fourth proportional to 168,729.60, 253,132.80 and 98,572.80 is: 147,881.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,729.60 : 253,132.80 = 98,572.80 : x
  2. Step 2: Convert to fraction form
    168,729.60/253,132.80 = 98,572.80/x
  3. Step 3: Cross multiply
    168,729.60x = 253,132.80 × 98,572.80
  4. Step 4: Simplify right side
    168,729.60x = 24,952,008,867.84
  5. Step 5: Solve for x
    x = 24,952,008,867.84/168,729.60
  6. Step 6: Final answer
    x = 147,881.63

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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.