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Finding the Fourth Proportional to 238,506.88, 329,138.40 and 136,531.78

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Solution

The fourth proportional to 238,506.88, 329,138.40 and 136,531.78 is: 188,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,506.88 : 329,138.40 = 136,531.78 : x
  2. Step 2: Convert to fraction form
    238,506.88/329,138.40 = 136,531.78/x
  3. Step 3: Cross multiply
    238,506.88x = 329,138.40 × 136,531.78
  4. Step 4: Simplify right side
    238,506.88x = 44,937,851,618.35
  5. Step 5: Solve for x
    x = 44,937,851,618.35/238,506.88
  6. Step 6: Final answer
    x = 188,413.23

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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.