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Finding the Fourth Proportional to 73,611.90, 110,417.85 and 18,207.90

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Solution

The fourth proportional to 73,611.90, 110,417.85 and 18,207.90 is: 27,311.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,611.90 : 110,417.85 = 18,207.90 : x
  2. Step 2: Convert to fraction form
    73,611.90/110,417.85 = 18,207.90/x
  3. Step 3: Cross multiply
    73,611.90x = 110,417.85 × 18,207.90
  4. Step 4: Simplify right side
    73,611.90x = 2,010,477,171.02
  5. Step 5: Solve for x
    x = 2,010,477,171.02/73,611.90
  6. Step 6: Final answer
    x = 27,311.85

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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.