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Finding the Fourth Proportional to 10,881.65, 15,015.78 and 6,100.89

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Solution

The fourth proportional to 10,881.65, 15,015.78 and 6,100.89 is: 8,418.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.65 : 15,015.78 = 6,100.89 : x
  2. Step 2: Convert to fraction form
    10,881.65/15,015.78 = 6,100.89/x
  3. Step 3: Cross multiply
    10,881.65x = 15,015.78 × 6,100.89
  4. Step 4: Simplify right side
    10,881.65x = 91,609,622.04
  5. Step 5: Solve for x
    x = 91,609,622.04/10,881.65
  6. Step 6: Final answer
    x = 8,418.73

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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.