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Finding the Fourth Proportional to 70,868.72, 106,327.20 and 44,542.64

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Solution

The fourth proportional to 70,868.72, 106,327.20 and 44,542.64 is: 66,829.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,868.72 : 106,327.20 = 44,542.64 : x
  2. Step 2: Convert to fraction form
    70,868.72/106,327.20 = 44,542.64/x
  3. Step 3: Cross multiply
    70,868.72x = 106,327.20 × 44,542.64
  4. Step 4: Simplify right side
    70,868.72x = 4,736,094,191.81
  5. Step 5: Solve for x
    x = 4,736,094,191.81/70,868.72
  6. Step 6: Final answer
    x = 66,829.12

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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.