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Finding the Fourth Proportional to 18,774.88, 25,914.33 and 11,697.10

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Solution

The fourth proportional to 18,774.88, 25,914.33 and 11,697.10 is: 16,145.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.88 : 25,914.33 = 11,697.10 : x
  2. Step 2: Convert to fraction form
    18,774.88/25,914.33 = 11,697.10/x
  3. Step 3: Cross multiply
    18,774.88x = 25,914.33 × 11,697.10
  4. Step 4: Simplify right side
    18,774.88x = 303,122,444.66
  5. Step 5: Solve for x
    x = 303,122,444.66/18,774.88
  6. Step 6: Final answer
    x = 16,145.11

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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.