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Finding the Fourth Proportional to 14,832.65, 20,468.78 and 8,118.14

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Solution

The fourth proportional to 14,832.65, 20,468.78 and 8,118.14 is: 11,202.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,832.65 : 20,468.78 = 8,118.14 : x
  2. Step 2: Convert to fraction form
    14,832.65/20,468.78 = 8,118.14/x
  3. Step 3: Cross multiply
    14,832.65x = 20,468.78 × 8,118.14
  4. Step 4: Simplify right side
    14,832.65x = 166,168,421.67
  5. Step 5: Solve for x
    x = 166,168,421.67/14,832.65
  6. Step 6: Final answer
    x = 11,202.88

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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.