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Finding the Fourth Proportional to 6,671.76, 10,011.60 and 2,974.20

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Solution

The fourth proportional to 6,671.76, 10,011.60 and 2,974.20 is: 4,463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.76 : 10,011.60 = 2,974.20 : x
  2. Step 2: Convert to fraction form
    6,671.76/10,011.60 = 2,974.20/x
  3. Step 3: Cross multiply
    6,671.76x = 10,011.60 × 2,974.20
  4. Step 4: Simplify right side
    6,671.76x = 29,776,500.72
  5. Step 5: Solve for x
    x = 29,776,500.72/6,671.76
  6. Step 6: Final answer
    x = 4,463.07

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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.