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Finding the Fourth Proportional to 18,759.62, 25,858.50 and 14,774.42

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Solution

The fourth proportional to 18,759.62, 25,858.50 and 14,774.42 is: 20,365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.62 : 25,858.50 = 14,774.42 : x
  2. Step 2: Convert to fraction form
    18,759.62/25,858.50 = 14,774.42/x
  3. Step 3: Cross multiply
    18,759.62x = 25,858.50 × 14,774.42
  4. Step 4: Simplify right side
    18,759.62x = 382,044,339.57
  5. Step 5: Solve for x
    x = 382,044,339.57/18,759.62
  6. Step 6: Final answer
    x = 20,365.25

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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.