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Finding the Fourth Proportional to 98,716.80, 148,172.40 and 48,853.20

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Solution

The fourth proportional to 98,716.80, 148,172.40 and 48,853.20 is: 73,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,716.80 : 148,172.40 = 48,853.20 : x
  2. Step 2: Convert to fraction form
    98,716.80/148,172.40 = 48,853.20/x
  3. Step 3: Cross multiply
    98,716.80x = 148,172.40 × 48,853.20
  4. Step 4: Simplify right side
    98,716.80x = 7,238,695,891.68
  5. Step 5: Solve for x
    x = 7,238,695,891.68/98,716.80
  6. Step 6: Final answer
    x = 73,327.90

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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.