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Finding the Fourth Proportional to 158,503.50, 218,757.21 and 98,093.61

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Solution

The fourth proportional to 158,503.50, 218,757.21 and 98,093.61 is: 135,383.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,503.50 : 218,757.21 = 98,093.61 : x
  2. Step 2: Convert to fraction form
    158,503.50/218,757.21 = 98,093.61/x
  3. Step 3: Cross multiply
    158,503.50x = 218,757.21 × 98,093.61
  4. Step 4: Simplify right side
    158,503.50x = 21,458,684,442.43
  5. Step 5: Solve for x
    x = 21,458,684,442.43/158,503.50
  6. Step 6: Final answer
    x = 135,383.03

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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.