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Finding the Fourth Proportional to 2,808.91, 3,875.10 and 2,061.57

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Solution

The fourth proportional to 2,808.91, 3,875.10 and 2,061.57 is: 2,844.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.91 : 3,875.10 = 2,061.57 : x
  2. Step 2: Convert to fraction form
    2,808.91/3,875.10 = 2,061.57/x
  3. Step 3: Cross multiply
    2,808.91x = 3,875.10 × 2,061.57
  4. Step 4: Simplify right side
    2,808.91x = 7,988,789.91
  5. Step 5: Solve for x
    x = 7,988,789.91/2,808.91
  6. Step 6: Final answer
    x = 2,844.09

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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.