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Finding the Fourth Proportional to 18,703.26, 25,921.97 and 18,353.34

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Solution

The fourth proportional to 18,703.26, 25,921.97 and 18,353.34 is: 25,436.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.26 : 25,921.97 = 18,353.34 : x
  2. Step 2: Convert to fraction form
    18,703.26/25,921.97 = 18,353.34/x
  3. Step 3: Cross multiply
    18,703.26x = 25,921.97 × 18,353.34
  4. Step 4: Simplify right side
    18,703.26x = 475,754,637.11
  5. Step 5: Solve for x
    x = 475,754,637.11/18,703.26
  6. Step 6: Final answer
    x = 25,436.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.