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Finding the Fourth Proportional to 13,706.60, 18,927.78 and 10,932.20

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Solution

The fourth proportional to 13,706.60, 18,927.78 and 10,932.20 is: 15,096.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706.60 : 18,927.78 = 10,932.20 : x
  2. Step 2: Convert to fraction form
    13,706.60/18,927.78 = 10,932.20/x
  3. Step 3: Cross multiply
    13,706.60x = 18,927.78 × 10,932.20
  4. Step 4: Simplify right side
    13,706.60x = 206,922,276.52
  5. Step 5: Solve for x
    x = 206,922,276.52/13,706.60
  6. Step 6: Final answer
    x = 15,096.54

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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.