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Finding the Fourth Proportional to 10,616.93, 15,987.10 and 7,863.11

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Solution

The fourth proportional to 10,616.93, 15,987.10 and 7,863.11 is: 11,840.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,616.93 : 15,987.10 = 7,863.11 : x
  2. Step 2: Convert to fraction form
    10,616.93/15,987.10 = 7,863.11/x
  3. Step 3: Cross multiply
    10,616.93x = 15,987.10 × 7,863.11
  4. Step 4: Simplify right side
    10,616.93x = 125,708,226.29
  5. Step 5: Solve for x
    x = 125,708,226.29/10,616.93
  6. Step 6: Final answer
    x = 11,840.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.