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Finding the Fourth Proportional to 14,798.70, 20,422.14 and 8,084.72

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Solution

The fourth proportional to 14,798.70, 20,422.14 and 8,084.72 is: 11,156.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,798.70 : 20,422.14 = 8,084.72 : x
  2. Step 2: Convert to fraction form
    14,798.70/20,422.14 = 8,084.72/x
  3. Step 3: Cross multiply
    14,798.70x = 20,422.14 × 8,084.72
  4. Step 4: Simplify right side
    14,798.70x = 165,107,151.27
  5. Step 5: Solve for x
    x = 165,107,151.27/14,798.70
  6. Step 6: Final answer
    x = 11,156.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.