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Finding the Fourth Proportional to 74,049.40, 111,090.30 and 36,627.40

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Solution

The fourth proportional to 74,049.40, 111,090.30 and 36,627.40 is: 54,949.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,049.40 : 111,090.30 = 36,627.40 : x
  2. Step 2: Convert to fraction form
    74,049.40/111,090.30 = 36,627.40/x
  3. Step 3: Cross multiply
    74,049.40x = 111,090.30 × 36,627.40
  4. Step 4: Simplify right side
    74,049.40x = 4,068,948,854.22
  5. Step 5: Solve for x
    x = 4,068,948,854.22/74,049.40
  6. Step 6: Final answer
    x = 54,949.11

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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.