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Finding the Fourth Proportional to 193,653.20, 290,422.20 and 75,256.40

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Solution

The fourth proportional to 193,653.20, 290,422.20 and 75,256.40 is: 112,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,653.20 : 290,422.20 = 75,256.40 : x
  2. Step 2: Convert to fraction form
    193,653.20/290,422.20 = 75,256.40/x
  3. Step 3: Cross multiply
    193,653.20x = 290,422.20 × 75,256.40
  4. Step 4: Simplify right side
    193,653.20x = 21,856,129,252.08
  5. Step 5: Solve for x
    x = 21,856,129,252.08/193,653.20
  6. Step 6: Final answer
    x = 112,862.22

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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.