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Finding the Fourth Proportional to 28,223.64, 38,956.68 and 17,471.52

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Solution

The fourth proportional to 28,223.64, 38,956.68 and 17,471.52 is: 24,115.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.64 : 38,956.68 = 17,471.52 : x
  2. Step 2: Convert to fraction form
    28,223.64/38,956.68 = 17,471.52/x
  3. Step 3: Cross multiply
    28,223.64x = 38,956.68 × 17,471.52
  4. Step 4: Simplify right side
    28,223.64x = 680,632,413.75
  5. Step 5: Solve for x
    x = 680,632,413.75/28,223.64
  6. Step 6: Final answer
    x = 24,115.69

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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.