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Finding the Fourth Proportional to 25,240.44, 37,860.66 and 15,987

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Solution

The fourth proportional to 25,240.44, 37,860.66 and 15,987 is: 23,980.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,240.44 : 37,860.66 = 15,987 : x
  2. Step 2: Convert to fraction form
    25,240.44/37,860.66 = 15,987/x
  3. Step 3: Cross multiply
    25,240.44x = 37,860.66 × 15,987
  4. Step 4: Simplify right side
    25,240.44x = 605,278,371.42
  5. Step 5: Solve for x
    x = 605,278,371.42/25,240.44
  6. Step 6: Final answer
    x = 23,980.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.