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Finding the Fourth Proportional to 11,564.76, 15,959.36 and 7,375.44

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Solution

The fourth proportional to 11,564.76, 15,959.36 and 7,375.44 is: 10,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,564.76 : 15,959.36 = 7,375.44 : x
  2. Step 2: Convert to fraction form
    11,564.76/15,959.36 = 7,375.44/x
  3. Step 3: Cross multiply
    11,564.76x = 15,959.36 × 7,375.44
  4. Step 4: Simplify right side
    11,564.76x = 117,707,302.12
  5. Step 5: Solve for x
    x = 117,707,302.12/11,564.76
  6. Step 6: Final answer
    x = 10,178.10

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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.