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Finding the Fourth Proportional to 110,987.88, 166,842.72 and 89,041.38

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Solution

The fourth proportional to 110,987.88, 166,842.72 and 89,041.38 is: 133,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,987.88 : 166,842.72 = 89,041.38 : x
  2. Step 2: Convert to fraction form
    110,987.88/166,842.72 = 89,041.38/x
  3. Step 3: Cross multiply
    110,987.88x = 166,842.72 × 89,041.38
  4. Step 4: Simplify right side
    110,987.88x = 14,855,906,031.75
  5. Step 5: Solve for x
    x = 14,855,906,031.75/110,987.88
  6. Step 6: Final answer
    x = 133,851.61

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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.