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Finding the Fourth Proportional to 25,311.72, 37,968.60 and 9,515.10

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Solution

The fourth proportional to 25,311.72, 37,968.60 and 9,515.10 is: 14,273.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,311.72 : 37,968.60 = 9,515.10 : x
  2. Step 2: Convert to fraction form
    25,311.72/37,968.60 = 9,515.10/x
  3. Step 3: Cross multiply
    25,311.72x = 37,968.60 × 9,515.10
  4. Step 4: Simplify right side
    25,311.72x = 361,275,025.86
  5. Step 5: Solve for x
    x = 361,275,025.86/25,311.72
  6. Step 6: Final answer
    x = 14,273.03

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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.