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Finding the Fourth Proportional to 9,439.76, 14,159.69 and 2,866

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Solution

The fourth proportional to 9,439.76, 14,159.69 and 2,866 is: 4,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,439.76 : 14,159.69 = 2,866 : x
  2. Step 2: Convert to fraction form
    9,439.76/14,159.69 = 2,866/x
  3. Step 3: Cross multiply
    9,439.76x = 14,159.69 × 2,866
  4. Step 4: Simplify right side
    9,439.76x = 40,581,671.54
  5. Step 5: Solve for x
    x = 40,581,671.54/9,439.76
  6. Step 6: Final answer
    x = 4,299.02

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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.