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Finding the Fourth Proportional to 57,838.59, 79,815.75 and 31,998.09

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Solution

The fourth proportional to 57,838.59, 79,815.75 and 31,998.09 is: 44,156.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,838.59 : 79,815.75 = 31,998.09 : x
  2. Step 2: Convert to fraction form
    57,838.59/79,815.75 = 31,998.09/x
  3. Step 3: Cross multiply
    57,838.59x = 79,815.75 × 31,998.09
  4. Step 4: Simplify right side
    57,838.59x = 2,553,951,551.92
  5. Step 5: Solve for x
    x = 2,553,951,551.92/57,838.59
  6. Step 6: Final answer
    x = 44,156.53

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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.