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Finding the Fourth Proportional to 2,562.10, 3,842.95 and 918.48

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Solution

The fourth proportional to 2,562.10, 3,842.95 and 918.48 is: 1,377.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,562.10 : 3,842.95 = 918.48 : x
  2. Step 2: Convert to fraction form
    2,562.10/3,842.95 = 918.48/x
  3. Step 3: Cross multiply
    2,562.10x = 3,842.95 × 918.48
  4. Step 4: Simplify right side
    2,562.10x = 3,529,672.72
  5. Step 5: Solve for x
    x = 3,529,672.72/2,562.10
  6. Step 6: Final answer
    x = 1,377.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.