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Finding the Fourth Proportional to 73,594.20, 110,358.09 and 20,991.18

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Solution

The fourth proportional to 73,594.20, 110,358.09 and 20,991.18 is: 31,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,594.20 : 110,358.09 = 20,991.18 : x
  2. Step 2: Convert to fraction form
    73,594.20/110,358.09 = 20,991.18/x
  3. Step 3: Cross multiply
    73,594.20x = 110,358.09 × 20,991.18
  4. Step 4: Simplify right side
    73,594.20x = 2,316,546,531.65
  5. Step 5: Solve for x
    x = 2,316,546,531.65/73,594.20
  6. Step 6: Final answer
    x = 31,477.30

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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.