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Finding the Fourth Proportional to 3,268.52, 4,510.05 and 1,871

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Solution

The fourth proportional to 3,268.52, 4,510.05 and 1,871 is: 2,581.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,268.52 : 4,510.05 = 1,871 : x
  2. Step 2: Convert to fraction form
    3,268.52/4,510.05 = 1,871/x
  3. Step 3: Cross multiply
    3,268.52x = 4,510.05 × 1,871
  4. Step 4: Simplify right side
    3,268.52x = 8,438,303.55
  5. Step 5: Solve for x
    x = 8,438,303.55/3,268.52
  6. Step 6: Final answer
    x = 2,581.69

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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.