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Finding the Fourth Proportional to 158,556.27, 218,806.07 and 86,936.12

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Solution

The fourth proportional to 158,556.27, 218,806.07 and 86,936.12 is: 119,970.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,556.27 : 218,806.07 = 86,936.12 : x
  2. Step 2: Convert to fraction form
    158,556.27/218,806.07 = 86,936.12/x
  3. Step 3: Cross multiply
    158,556.27x = 218,806.07 × 86,936.12
  4. Step 4: Simplify right side
    158,556.27x = 19,022,150,758.25
  5. Step 5: Solve for x
    x = 19,022,150,758.25/158,556.27
  6. Step 6: Final answer
    x = 119,970.98

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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.