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Finding the Fourth Proportional to 299,091.40, 412,512.75 and 191,671.42

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Solution

The fourth proportional to 299,091.40, 412,512.75 and 191,671.42 is: 264,357.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,091.40 : 412,512.75 = 191,671.42 : x
  2. Step 2: Convert to fraction form
    299,091.40/412,512.75 = 191,671.42/x
  3. Step 3: Cross multiply
    299,091.40x = 412,512.75 × 191,671.42
  4. Step 4: Simplify right side
    299,091.40x = 79,066,904,560.61
  5. Step 5: Solve for x
    x = 79,066,904,560.61/299,091.40
  6. Step 6: Final answer
    x = 264,357.00

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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.