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Finding the Fourth Proportional to 15,792.46, 21,794.13 and 9,079.48

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Solution

The fourth proportional to 15,792.46, 21,794.13 and 9,079.48 is: 12,529.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,792.46 : 21,794.13 = 9,079.48 : x
  2. Step 2: Convert to fraction form
    15,792.46/21,794.13 = 9,079.48/x
  3. Step 3: Cross multiply
    15,792.46x = 21,794.13 × 9,079.48
  4. Step 4: Simplify right side
    15,792.46x = 197,879,367.45
  5. Step 5: Solve for x
    x = 197,879,367.45/15,792.46
  6. Step 6: Final answer
    x = 12,529.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.