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Finding the Fourth Proportional to 73,398.64, 110,097.96 and 20,808.58

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Solution

The fourth proportional to 73,398.64, 110,097.96 and 20,808.58 is: 31,212.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,398.64 : 110,097.96 = 20,808.58 : x
  2. Step 2: Convert to fraction form
    73,398.64/110,097.96 = 20,808.58/x
  3. Step 3: Cross multiply
    73,398.64x = 110,097.96 × 20,808.58
  4. Step 4: Simplify right side
    73,398.64x = 2,290,982,104.45
  5. Step 5: Solve for x
    x = 2,290,982,104.45/73,398.64
  6. Step 6: Final answer
    x = 31,212.87

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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.