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Finding the Fourth Proportional to 18,794.90, 25,925.16 and 12,089.24

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Solution

The fourth proportional to 18,794.90, 25,925.16 and 12,089.24 is: 16,675.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.90 : 25,925.16 = 12,089.24 : x
  2. Step 2: Convert to fraction form
    18,794.90/25,925.16 = 12,089.24/x
  3. Step 3: Cross multiply
    18,794.90x = 25,925.16 × 12,089.24
  4. Step 4: Simplify right side
    18,794.90x = 313,415,481.28
  5. Step 5: Solve for x
    x = 313,415,481.28/18,794.90
  6. Step 6: Final answer
    x = 16,675.56

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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.