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Finding the Fourth Proportional to 1,047.27, 1,571.40 and 741.09

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Solution

The fourth proportional to 1,047.27, 1,571.40 and 741.09 is: 1,111.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.27 : 1,571.40 = 741.09 : x
  2. Step 2: Convert to fraction form
    1,047.27/1,571.40 = 741.09/x
  3. Step 3: Cross multiply
    1,047.27x = 1,571.40 × 741.09
  4. Step 4: Simplify right side
    1,047.27x = 1,164,548.83
  5. Step 5: Solve for x
    x = 1,164,548.83/1,047.27
  6. Step 6: Final answer
    x = 1,111.99

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