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Finding the Fourth Proportional to 194,418.30, 291,454.65 and 127,890.30

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Solution

The fourth proportional to 194,418.30, 291,454.65 and 127,890.30 is: 191,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,418.30 : 291,454.65 = 127,890.30 : x
  2. Step 2: Convert to fraction form
    194,418.30/291,454.65 = 127,890.30/x
  3. Step 3: Cross multiply
    194,418.30x = 291,454.65 × 127,890.30
  4. Step 4: Simplify right side
    194,418.30x = 37,274,222,624.90
  5. Step 5: Solve for x
    x = 37,274,222,624.90/194,418.30
  6. Step 6: Final answer
    x = 191,721.78

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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.