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Finding the Fourth Proportional to 665,920.25, 998,881.34 and 271,936.25

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Solution

The fourth proportional to 665,920.25, 998,881.34 and 271,936.25 is: 407,904.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,920.25 : 998,881.34 = 271,936.25 : x
  2. Step 2: Convert to fraction form
    665,920.25/998,881.34 = 271,936.25/x
  3. Step 3: Cross multiply
    665,920.25x = 998,881.34 × 271,936.25
  4. Step 4: Simplify right side
    665,920.25x = 271,632,044,434.89
  5. Step 5: Solve for x
    x = 271,632,044,434.89/665,920.25
  6. Step 6: Final answer
    x = 407,904.77

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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.