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Finding the Fourth Proportional to 158,616.54, 218,896.96 and 86,999.58

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Solution

The fourth proportional to 158,616.54, 218,896.96 and 86,999.58 is: 120,062.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,616.54 : 218,896.96 = 86,999.58 : x
  2. Step 2: Convert to fraction form
    158,616.54/218,896.96 = 86,999.58/x
  3. Step 3: Cross multiply
    158,616.54x = 218,896.96 × 86,999.58
  4. Step 4: Simplify right side
    158,616.54x = 19,043,943,583.28
  5. Step 5: Solve for x
    x = 19,043,943,583.28/158,616.54
  6. Step 6: Final answer
    x = 120,062.79

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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.