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Finding the Fourth Proportional to 25,148.40, 37,695.04 and 12,648.48

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Solution

The fourth proportional to 25,148.40, 37,695.04 and 12,648.48 is: 18,958.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,148.40 : 37,695.04 = 12,648.48 : x
  2. Step 2: Convert to fraction form
    25,148.40/37,695.04 = 12,648.48/x
  3. Step 3: Cross multiply
    25,148.40x = 37,695.04 × 12,648.48
  4. Step 4: Simplify right side
    25,148.40x = 476,784,959.54
  5. Step 5: Solve for x
    x = 476,784,959.54/25,148.40
  6. Step 6: Final answer
    x = 18,958.86

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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.