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Finding the Fourth Proportional to 38,793.30, 58,103.55 and 31,881.30

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Solution

The fourth proportional to 38,793.30, 58,103.55 and 31,881.30 is: 47,750.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,793.30 : 58,103.55 = 31,881.30 : x
  2. Step 2: Convert to fraction form
    38,793.30/58,103.55 = 31,881.30/x
  3. Step 3: Cross multiply
    38,793.30x = 58,103.55 × 31,881.30
  4. Step 4: Simplify right side
    38,793.30x = 1,852,416,708.62
  5. Step 5: Solve for x
    x = 1,852,416,708.62/38,793.30
  6. Step 6: Final answer
    x = 47,750.94

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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.