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Finding the Fourth Proportional to 73,447.90, 110,000.98 and 71,427.58

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Solution

The fourth proportional to 73,447.90, 110,000.98 and 71,427.58 is: 106,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,447.90 : 110,000.98 = 71,427.58 : x
  2. Step 2: Convert to fraction form
    73,447.90/110,000.98 = 71,427.58/x
  3. Step 3: Cross multiply
    73,447.90x = 110,000.98 × 71,427.58
  4. Step 4: Simplify right side
    73,447.90x = 7,857,103,799.03
  5. Step 5: Solve for x
    x = 7,857,103,799.03/73,447.90
  6. Step 6: Final answer
    x = 106,975.20

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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.