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Finding the Fourth Proportional to 7,911.72, 10,919.04 and 5,042.52

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Solution

The fourth proportional to 7,911.72, 10,919.04 and 5,042.52 is: 6,959.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.72 : 10,919.04 = 5,042.52 : x
  2. Step 2: Convert to fraction form
    7,911.72/10,919.04 = 5,042.52/x
  3. Step 3: Cross multiply
    7,911.72x = 10,919.04 × 5,042.52
  4. Step 4: Simplify right side
    7,911.72x = 55,059,477.58
  5. Step 5: Solve for x
    x = 55,059,477.58/7,911.72
  6. Step 6: Final answer
    x = 6,959.23

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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.