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Finding the Fourth Proportional to 10,963.12, 15,128.88 and 5,995.12

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Solution

The fourth proportional to 10,963.12, 15,128.88 and 5,995.12 is: 8,273.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,963.12 : 15,128.88 = 5,995.12 : x
  2. Step 2: Convert to fraction form
    10,963.12/15,128.88 = 5,995.12/x
  3. Step 3: Cross multiply
    10,963.12x = 15,128.88 × 5,995.12
  4. Step 4: Simplify right side
    10,963.12x = 90,699,451.07
  5. Step 5: Solve for x
    x = 90,699,451.07/10,963.12
  6. Step 6: Final answer
    x = 8,273.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.