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Finding the Fourth Proportional to 199,828.88, 275,886.84 and 128,334.90

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Solution

The fourth proportional to 199,828.88, 275,886.84 and 128,334.90 is: 177,181.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,828.88 : 275,886.84 = 128,334.90 : x
  2. Step 2: Convert to fraction form
    199,828.88/275,886.84 = 128,334.90/x
  3. Step 3: Cross multiply
    199,828.88x = 275,886.84 × 128,334.90
  4. Step 4: Simplify right side
    199,828.88x = 35,405,910,022.72
  5. Step 5: Solve for x
    x = 35,405,910,022.72/199,828.88
  6. Step 6: Final answer
    x = 177,181.15

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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.