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Finding the Fourth Proportional to 18,978.33, 26,189.15 and 10,593.21

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Solution

The fourth proportional to 18,978.33, 26,189.15 and 10,593.21 is: 14,618.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978.33 : 26,189.15 = 10,593.21 : x
  2. Step 2: Convert to fraction form
    18,978.33/26,189.15 = 10,593.21/x
  3. Step 3: Cross multiply
    18,978.33x = 26,189.15 × 10,593.21
  4. Step 4: Simplify right side
    18,978.33x = 277,427,112.71
  5. Step 5: Solve for x
    x = 277,427,112.71/18,978.33
  6. Step 6: Final answer
    x = 14,618.10

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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.