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Finding the Fourth Proportional to 36,687.60, 55,031.40 and 25,628.40

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Solution

The fourth proportional to 36,687.60, 55,031.40 and 25,628.40 is: 38,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.60 : 55,031.40 = 25,628.40 : x
  2. Step 2: Convert to fraction form
    36,687.60/55,031.40 = 25,628.40/x
  3. Step 3: Cross multiply
    36,687.60x = 55,031.40 × 25,628.40
  4. Step 4: Simplify right side
    36,687.60x = 1,410,366,731.76
  5. Step 5: Solve for x
    x = 1,410,366,731.76/36,687.60
  6. Step 6: Final answer
    x = 38,442.60

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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.