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Finding the Fourth Proportional to 13,760.76, 18,993.26 and 7,795.95

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Solution

The fourth proportional to 13,760.76, 18,993.26 and 7,795.95 is: 10,760.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.76 : 18,993.26 = 7,795.95 : x
  2. Step 2: Convert to fraction form
    13,760.76/18,993.26 = 7,795.95/x
  3. Step 3: Cross multiply
    13,760.76x = 18,993.26 × 7,795.95
  4. Step 4: Simplify right side
    13,760.76x = 148,070,505.30
  5. Step 5: Solve for x
    x = 148,070,505.30/13,760.76
  6. Step 6: Final answer
    x = 10,760.34

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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.