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Finding the Fourth Proportional to 18,448.29, 27,672.44 and 8,590.46

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Solution

The fourth proportional to 18,448.29, 27,672.44 and 8,590.46 is: 12,885.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448.29 : 27,672.44 = 8,590.46 : x
  2. Step 2: Convert to fraction form
    18,448.29/27,672.44 = 8,590.46/x
  3. Step 3: Cross multiply
    18,448.29x = 27,672.44 × 8,590.46
  4. Step 4: Simplify right side
    18,448.29x = 237,718,807.61
  5. Step 5: Solve for x
    x = 237,718,807.61/18,448.29
  6. Step 6: Final answer
    x = 12,885.68

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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.