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Finding the Fourth Proportional to 15,906.70, 23,839.65 and 8,886.70

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Solution

The fourth proportional to 15,906.70, 23,839.65 and 8,886.70 is: 13,318.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,906.70 : 23,839.65 = 8,886.70 : x
  2. Step 2: Convert to fraction form
    15,906.70/23,839.65 = 8,886.70/x
  3. Step 3: Cross multiply
    15,906.70x = 23,839.65 × 8,886.70
  4. Step 4: Simplify right side
    15,906.70x = 211,855,817.66
  5. Step 5: Solve for x
    x = 211,855,817.66/15,906.70
  6. Step 6: Final answer
    x = 13,318.65

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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.