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Finding the Fourth Proportional to 193,398.18, 290,111.32 and 80,965.32

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Solution

The fourth proportional to 193,398.18, 290,111.32 and 80,965.32 is: 121,453.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,398.18 : 290,111.32 = 80,965.32 : x
  2. Step 2: Convert to fraction form
    193,398.18/290,111.32 = 80,965.32/x
  3. Step 3: Cross multiply
    193,398.18x = 290,111.32 × 80,965.32
  4. Step 4: Simplify right side
    193,398.18x = 23,488,955,859.42
  5. Step 5: Solve for x
    x = 23,488,955,859.42/193,398.18
  6. Step 6: Final answer
    x = 121,453.86

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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.