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Finding the Fourth Proportional to 28,850.58, 43,275.87 and 15,728.58

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Solution

The fourth proportional to 28,850.58, 43,275.87 and 15,728.58 is: 23,592.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,850.58 : 43,275.87 = 15,728.58 : x
  2. Step 2: Convert to fraction form
    28,850.58/43,275.87 = 15,728.58/x
  3. Step 3: Cross multiply
    28,850.58x = 43,275.87 × 15,728.58
  4. Step 4: Simplify right side
    28,850.58x = 680,667,983.36
  5. Step 5: Solve for x
    x = 680,667,983.36/28,850.58
  6. Step 6: Final answer
    x = 23,592.87

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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.