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Finding the Fourth Proportional to 70,981.44, 106,481.76 and 56,217.76

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Solution

The fourth proportional to 70,981.44, 106,481.76 and 56,217.76 is: 84,334.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,981.44 : 106,481.76 = 56,217.76 : x
  2. Step 2: Convert to fraction form
    70,981.44/106,481.76 = 56,217.76/x
  3. Step 3: Cross multiply
    70,981.44x = 106,481.76 × 56,217.76
  4. Step 4: Simplify right side
    70,981.44x = 5,986,166,028.06
  5. Step 5: Solve for x
    x = 5,986,166,028.06/70,981.44
  6. Step 6: Final answer
    x = 84,334.24

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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.