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Finding the Fourth Proportional to 71,670.72, 107,364.15 and 49,125.90

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Solution

The fourth proportional to 71,670.72, 107,364.15 and 49,125.90 is: 73,591.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,670.72 : 107,364.15 = 49,125.90 : x
  2. Step 2: Convert to fraction form
    71,670.72/107,364.15 = 49,125.90/x
  3. Step 3: Cross multiply
    71,670.72x = 107,364.15 × 49,125.90
  4. Step 4: Simplify right side
    71,670.72x = 5,274,360,496.49
  5. Step 5: Solve for x
    x = 5,274,360,496.49/71,670.72
  6. Step 6: Final answer
    x = 73,591.57

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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.