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Finding the Fourth Proportional to 18,473.50, 25,493.44 and 16,989.58

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Solution

The fourth proportional to 18,473.50, 25,493.44 and 16,989.58 is: 23,445.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473.50 : 25,493.44 = 16,989.58 : x
  2. Step 2: Convert to fraction form
    18,473.50/25,493.44 = 16,989.58/x
  3. Step 3: Cross multiply
    18,473.50x = 25,493.44 × 16,989.58
  4. Step 4: Simplify right side
    18,473.50x = 433,122,838.36
  5. Step 5: Solve for x
    x = 433,122,838.36/18,473.50
  6. Step 6: Final answer
    x = 23,445.63

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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.