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Finding the Fourth Proportional to 57,447.62, 86,171.31 and 15,894.50

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Solution

The fourth proportional to 57,447.62, 86,171.31 and 15,894.50 is: 23,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,447.62 : 86,171.31 = 15,894.50 : x
  2. Step 2: Convert to fraction form
    57,447.62/86,171.31 = 15,894.50/x
  3. Step 3: Cross multiply
    57,447.62x = 86,171.31 × 15,894.50
  4. Step 4: Simplify right side
    57,447.62x = 1,369,649,886.80
  5. Step 5: Solve for x
    x = 1,369,649,886.80/57,447.62
  6. Step 6: Final answer
    x = 23,841.72

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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.