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Finding the Fourth Proportional to 73,990.60, 111,002.48 and 21,404.16

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Solution

The fourth proportional to 73,990.60, 111,002.48 and 21,404.16 is: 32,111.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,990.60 : 111,002.48 = 21,404.16 : x
  2. Step 2: Convert to fraction form
    73,990.60/111,002.48 = 21,404.16/x
  3. Step 3: Cross multiply
    73,990.60x = 111,002.48 × 21,404.16
  4. Step 4: Simplify right side
    73,990.60x = 2,375,914,842.32
  5. Step 5: Solve for x
    x = 2,375,914,842.32/73,990.60
  6. Step 6: Final answer
    x = 32,111.04

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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.