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Finding the Fourth Proportional to 1,972.47, 2,721.47 and 1,133.13

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Solution

The fourth proportional to 1,972.47, 2,721.47 and 1,133.13 is: 1,563.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.47 : 2,721.47 = 1,133.13 : x
  2. Step 2: Convert to fraction form
    1,972.47/2,721.47 = 1,133.13/x
  3. Step 3: Cross multiply
    1,972.47x = 2,721.47 × 1,133.13
  4. Step 4: Simplify right side
    1,972.47x = 3,083,773.64
  5. Step 5: Solve for x
    x = 3,083,773.64/1,972.47
  6. Step 6: Final answer
    x = 1,563.41

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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.