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Finding the Fourth Proportional to 13,792.77, 20,689.29 and 5,474.79

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Solution

The fourth proportional to 13,792.77, 20,689.29 and 5,474.79 is: 8,212.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.77 : 20,689.29 = 5,474.79 : x
  2. Step 2: Convert to fraction form
    13,792.77/20,689.29 = 5,474.79/x
  3. Step 3: Cross multiply
    13,792.77x = 20,689.29 × 5,474.79
  4. Step 4: Simplify right side
    13,792.77x = 113,269,518.00
  5. Step 5: Solve for x
    x = 113,269,518.00/13,792.77
  6. Step 6: Final answer
    x = 8,212.24

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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.