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Finding the Fourth Proportional to 2,257.35, 3,386.02 and 957.90

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Solution

The fourth proportional to 2,257.35, 3,386.02 and 957.90 is: 1,436.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.35 : 3,386.02 = 957.90 : x
  2. Step 2: Convert to fraction form
    2,257.35/3,386.02 = 957.90/x
  3. Step 3: Cross multiply
    2,257.35x = 3,386.02 × 957.90
  4. Step 4: Simplify right side
    2,257.35x = 3,243,468.56
  5. Step 5: Solve for x
    x = 3,243,468.56/2,257.35
  6. Step 6: Final answer
    x = 1,436.85

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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.