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Finding the Fourth Proportional to 10,876.74, 15,012.08 and 7,100.52

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Solution

The fourth proportional to 10,876.74, 15,012.08 and 7,100.52 is: 9,800.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.74 : 15,012.08 = 7,100.52 : x
  2. Step 2: Convert to fraction form
    10,876.74/15,012.08 = 7,100.52/x
  3. Step 3: Cross multiply
    10,876.74x = 15,012.08 × 7,100.52
  4. Step 4: Simplify right side
    10,876.74x = 106,593,574.28
  5. Step 5: Solve for x
    x = 106,593,574.28/10,876.74
  6. Step 6: Final answer
    x = 9,800.14

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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.