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Finding the Fourth Proportional to 96,808.60, 145,212.90 and 72,232.60

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Solution

The fourth proportional to 96,808.60, 145,212.90 and 72,232.60 is: 108,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,808.60 : 145,212.90 = 72,232.60 : x
  2. Step 2: Convert to fraction form
    96,808.60/145,212.90 = 72,232.60/x
  3. Step 3: Cross multiply
    96,808.60x = 145,212.90 × 72,232.60
  4. Step 4: Simplify right side
    96,808.60x = 10,489,105,320.54
  5. Step 5: Solve for x
    x = 10,489,105,320.54/96,808.60
  6. Step 6: Final answer
    x = 108,348.90

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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.