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Finding the Fourth Proportional to 86,682.66, 119,542.01 and 66,540.39

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Solution

The fourth proportional to 86,682.66, 119,542.01 and 66,540.39 is: 91,764.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,682.66 : 119,542.01 = 66,540.39 : x
  2. Step 2: Convert to fraction form
    86,682.66/119,542.01 = 66,540.39/x
  3. Step 3: Cross multiply
    86,682.66x = 119,542.01 × 66,540.39
  4. Step 4: Simplify right side
    86,682.66x = 7,954,371,036.37
  5. Step 5: Solve for x
    x = 7,954,371,036.37/86,682.66
  6. Step 6: Final answer
    x = 91,764.28

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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.