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Finding the Fourth Proportional to 17,912.18, 26,862.87 and 7,521.62

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Solution

The fourth proportional to 17,912.18, 26,862.87 and 7,521.62 is: 11,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,912.18 : 26,862.87 = 7,521.62 : x
  2. Step 2: Convert to fraction form
    17,912.18/26,862.87 = 7,521.62/x
  3. Step 3: Cross multiply
    17,912.18x = 26,862.87 × 7,521.62
  4. Step 4: Simplify right side
    17,912.18x = 202,052,300.25
  5. Step 5: Solve for x
    x = 202,052,300.25/17,912.18
  6. Step 6: Final answer
    x = 11,280.16

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1.5x scale

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.