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Finding the Fourth Proportional to 14,615.40, 21,947.40 and 8,046.30

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Solution

The fourth proportional to 14,615.40, 21,947.40 and 8,046.30 is: 12,082.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.40 : 21,947.40 = 8,046.30 : x
  2. Step 2: Convert to fraction form
    14,615.40/21,947.40 = 8,046.30/x
  3. Step 3: Cross multiply
    14,615.40x = 21,947.40 × 8,046.30
  4. Step 4: Simplify right side
    14,615.40x = 176,595,364.62
  5. Step 5: Solve for x
    x = 176,595,364.62/14,615.40
  6. Step 6: Final answer
    x = 12,082.83

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1.5x scale

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.