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Finding the Fourth Proportional to 2,687.40, 3,708.80 and 1,492.53

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Solution

The fourth proportional to 2,687.40, 3,708.80 and 1,492.53 is: 2,059.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.40 : 3,708.80 = 1,492.53 : x
  2. Step 2: Convert to fraction form
    2,687.40/3,708.80 = 1,492.53/x
  3. Step 3: Cross multiply
    2,687.40x = 3,708.80 × 1,492.53
  4. Step 4: Simplify right side
    2,687.40x = 5,535,473.89
  5. Step 5: Solve for x
    x = 5,535,473.89/2,687.40
  6. Step 6: Final answer
    x = 2,059.79

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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.