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Finding the Fourth Proportional to 43,171.44, 64,756.92 and 13,591.44

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Solution

The fourth proportional to 43,171.44, 64,756.92 and 13,591.44 is: 20,387.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,171.44 : 64,756.92 = 13,591.44 : x
  2. Step 2: Convert to fraction form
    43,171.44/64,756.92 = 13,591.44/x
  3. Step 3: Cross multiply
    43,171.44x = 64,756.92 × 13,591.44
  4. Step 4: Simplify right side
    43,171.44x = 880,139,792.76
  5. Step 5: Solve for x
    x = 880,139,792.76/43,171.44
  6. Step 6: Final answer
    x = 20,387.08

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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.