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Finding the Fourth Proportional to 238,290.78, 328,659.06 and 161,868.80

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Solution

The fourth proportional to 238,290.78, 328,659.06 and 161,868.80 is: 223,255.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,290.78 : 328,659.06 = 161,868.80 : x
  2. Step 2: Convert to fraction form
    238,290.78/328,659.06 = 161,868.80/x
  3. Step 3: Cross multiply
    238,290.78x = 328,659.06 × 161,868.80
  4. Step 4: Simplify right side
    238,290.78x = 53,199,647,651.33
  5. Step 5: Solve for x
    x = 53,199,647,651.33/238,290.78
  6. Step 6: Final answer
    x = 223,255.17

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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.