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Finding the Fourth Proportional to 14,563.76, 20,097.99 and 7,939.76

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Solution

The fourth proportional to 14,563.76, 20,097.99 and 7,939.76 is: 10,956.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,563.76 : 20,097.99 = 7,939.76 : x
  2. Step 2: Convert to fraction form
    14,563.76/20,097.99 = 7,939.76/x
  3. Step 3: Cross multiply
    14,563.76x = 20,097.99 × 7,939.76
  4. Step 4: Simplify right side
    14,563.76x = 159,573,217.08
  5. Step 5: Solve for x
    x = 159,573,217.08/14,563.76
  6. Step 6: Final answer
    x = 10,956.87

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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.