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Finding the Fourth Proportional to 86,805.48, 119,788.29 and 49,080.54

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Solution

The fourth proportional to 86,805.48, 119,788.29 and 49,080.54 is: 67,729.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,805.48 : 119,788.29 = 49,080.54 : x
  2. Step 2: Convert to fraction form
    86,805.48/119,788.29 = 49,080.54/x
  3. Step 3: Cross multiply
    86,805.48x = 119,788.29 × 49,080.54
  4. Step 4: Simplify right side
    86,805.48x = 5,879,273,958.88
  5. Step 5: Solve for x
    x = 5,879,273,958.88/86,805.48
  6. Step 6: Final answer
    x = 67,729.29

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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.