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Finding the Fourth Proportional to 26,616.12, 39,930.08 and 7,897.65

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Solution

The fourth proportional to 26,616.12, 39,930.08 and 7,897.65 is: 11,848.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,616.12 : 39,930.08 = 7,897.65 : x
  2. Step 2: Convert to fraction form
    26,616.12/39,930.08 = 7,897.65/x
  3. Step 3: Cross multiply
    26,616.12x = 39,930.08 × 7,897.65
  4. Step 4: Simplify right side
    26,616.12x = 315,353,756.82
  5. Step 5: Solve for x
    x = 315,353,756.82/26,616.12
  6. Step 6: Final answer
    x = 11,848.22

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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.