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Finding the Fourth Proportional to 86,805.06, 119,793.51 and 49,078.50

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Solution

The fourth proportional to 86,805.06, 119,793.51 and 49,078.50 is: 67,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,805.06 : 119,793.51 = 49,078.50 : x
  2. Step 2: Convert to fraction form
    86,805.06/119,793.51 = 49,078.50/x
  3. Step 3: Cross multiply
    86,805.06x = 119,793.51 × 49,078.50
  4. Step 4: Simplify right side
    86,805.06x = 5,879,285,780.54
  5. Step 5: Solve for x
    x = 5,879,285,780.54/86,805.06
  6. Step 6: Final answer
    x = 67,729.76

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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.