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Finding the Fourth Proportional to 193,557.20, 290,422.20 and 68,987.60

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Solution

The fourth proportional to 193,557.20, 290,422.20 and 68,987.60 is: 103,512.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,557.20 : 290,422.20 = 68,987.60 : x
  2. Step 2: Convert to fraction form
    193,557.20/290,422.20 = 68,987.60/x
  3. Step 3: Cross multiply
    193,557.20x = 290,422.20 × 68,987.60
  4. Step 4: Simplify right side
    193,557.20x = 20,035,530,564.72
  5. Step 5: Solve for x
    x = 20,035,530,564.72/193,557.20
  6. Step 6: Final answer
    x = 103,512.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.