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Finding the Fourth Proportional to 18,164.80, 27,248.04 and 9,416.80

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Solution

The fourth proportional to 18,164.80, 27,248.04 and 9,416.80 is: 14,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,164.80 : 27,248.04 = 9,416.80 : x
  2. Step 2: Convert to fraction form
    18,164.80/27,248.04 = 9,416.80/x
  3. Step 3: Cross multiply
    18,164.80x = 27,248.04 × 9,416.80
  4. Step 4: Simplify right side
    18,164.80x = 256,589,343.07
  5. Step 5: Solve for x
    x = 256,589,343.07/18,164.80
  6. Step 6: Final answer
    x = 14,125.64

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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.