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Finding the Fourth Proportional to 10,959.80, 15,124 and 6,717.92

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Solution

The fourth proportional to 10,959.80, 15,124 and 6,717.92 is: 9,270.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959.80 : 15,124 = 6,717.92 : x
  2. Step 2: Convert to fraction form
    10,959.80/15,124 = 6,717.92/x
  3. Step 3: Cross multiply
    10,959.80x = 15,124 × 6,717.92
  4. Step 4: Simplify right side
    10,959.80x = 101,601,822.08
  5. Step 5: Solve for x
    x = 101,601,822.08/10,959.80
  6. Step 6: Final answer
    x = 9,270.41

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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.