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Finding the Fourth Proportional to 50,872.59, 70,211.40 and 28,216.62

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Solution

The fourth proportional to 50,872.59, 70,211.40 and 28,216.62 is: 38,942.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,872.59 : 70,211.40 = 28,216.62 : x
  2. Step 2: Convert to fraction form
    50,872.59/70,211.40 = 28,216.62/x
  3. Step 3: Cross multiply
    50,872.59x = 70,211.40 × 28,216.62
  4. Step 4: Simplify right side
    50,872.59x = 1,981,128,393.47
  5. Step 5: Solve for x
    x = 1,981,128,393.47/50,872.59
  6. Step 6: Final answer
    x = 38,942.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.