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Finding the Fourth Proportional to 2,374.53, 3,560.76 and 912.66

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Solution

The fourth proportional to 2,374.53, 3,560.76 and 912.66 is: 1,368.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,374.53 : 3,560.76 = 912.66 : x
  2. Step 2: Convert to fraction form
    2,374.53/3,560.76 = 912.66/x
  3. Step 3: Cross multiply
    2,374.53x = 3,560.76 × 912.66
  4. Step 4: Simplify right side
    2,374.53x = 3,249,753.29
  5. Step 5: Solve for x
    x = 3,249,753.29/2,374.53
  6. Step 6: Final answer
    x = 1,368.59

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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.