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Finding the Fourth Proportional to 55,951.96, 83,928.14 and 20,891.24

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Solution

The fourth proportional to 55,951.96, 83,928.14 and 20,891.24 is: 31,336.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,951.96 : 83,928.14 = 20,891.24 : x
  2. Step 2: Convert to fraction form
    55,951.96/83,928.14 = 20,891.24/x
  3. Step 3: Cross multiply
    55,951.96x = 83,928.14 × 20,891.24
  4. Step 4: Simplify right side
    55,951.96x = 1,753,362,915.49
  5. Step 5: Solve for x
    x = 1,753,362,915.49/55,951.96
  6. Step 6: Final answer
    x = 31,336.93

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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.