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Finding the Fourth Proportional to 14,997.20, 20,700.14 and 8,624.49

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Solution

The fourth proportional to 14,997.20, 20,700.14 and 8,624.49 is: 11,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,997.20 : 20,700.14 = 8,624.49 : x
  2. Step 2: Convert to fraction form
    14,997.20/20,700.14 = 8,624.49/x
  3. Step 3: Cross multiply
    14,997.20x = 20,700.14 × 8,624.49
  4. Step 4: Simplify right side
    14,997.20x = 178,528,171.99
  5. Step 5: Solve for x
    x = 178,528,171.99/14,997.20
  6. Step 6: Final answer
    x = 11,904.10

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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.