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Finding the Fourth Proportional to 13,894.80, 19,173.46 and 7,924.88

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Solution

The fourth proportional to 13,894.80, 19,173.46 and 7,924.88 is: 10,935.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894.80 : 19,173.46 = 7,924.88 : x
  2. Step 2: Convert to fraction form
    13,894.80/19,173.46 = 7,924.88/x
  3. Step 3: Cross multiply
    13,894.80x = 19,173.46 × 7,924.88
  4. Step 4: Simplify right side
    13,894.80x = 151,947,369.68
  5. Step 5: Solve for x
    x = 151,947,369.68/13,894.80
  6. Step 6: Final answer
    x = 10,935.56

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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.