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Finding the Fourth Proportional to 44,587.60, 66,913.80 and 18,311.20

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Solution

The fourth proportional to 44,587.60, 66,913.80 and 18,311.20 is: 27,480.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,587.60 : 66,913.80 = 18,311.20 : x
  2. Step 2: Convert to fraction form
    44,587.60/66,913.80 = 18,311.20/x
  3. Step 3: Cross multiply
    44,587.60x = 66,913.80 × 18,311.20
  4. Step 4: Simplify right side
    44,587.60x = 1,225,271,974.56
  5. Step 5: Solve for x
    x = 1,225,271,974.56/44,587.60
  6. Step 6: Final answer
    x = 27,480.11

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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.