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Finding the Fourth Proportional to 110,660.20, 165,971.10 and 40,503.40

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Solution

The fourth proportional to 110,660.20, 165,971.10 and 40,503.40 is: 60,748.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,660.20 : 165,971.10 = 40,503.40 : x
  2. Step 2: Convert to fraction form
    110,660.20/165,971.10 = 40,503.40/x
  3. Step 3: Cross multiply
    110,660.20x = 165,971.10 × 40,503.40
  4. Step 4: Simplify right side
    110,660.20x = 6,722,393,851.74
  5. Step 5: Solve for x
    x = 6,722,393,851.74/110,660.20
  6. Step 6: Final answer
    x = 60,748.07

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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.