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Finding the Fourth Proportional to 158,238.63, 218,369.61 and 86,623.23

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Solution

The fourth proportional to 158,238.63, 218,369.61 and 86,623.23 is: 119,540.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,238.63 : 218,369.61 = 86,623.23 : x
  2. Step 2: Convert to fraction form
    158,238.63/218,369.61 = 86,623.23/x
  3. Step 3: Cross multiply
    158,238.63x = 218,369.61 × 86,623.23
  4. Step 4: Simplify right side
    158,238.63x = 18,915,880,952.04
  5. Step 5: Solve for x
    x = 18,915,880,952.04/158,238.63
  6. Step 6: Final answer
    x = 119,540.22

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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.