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Finding the Fourth Proportional to 376,587, 519,736.14 and 217,611

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Solution

The fourth proportional to 376,587, 519,736.14 and 217,611 is: 300,329.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,587 : 519,736.14 = 217,611 : x
  2. Step 2: Convert to fraction form
    376,587/519,736.14 = 217,611/x
  3. Step 3: Cross multiply
    376,587x = 519,736.14 × 217,611
  4. Step 4: Simplify right side
    376,587x = 113,100,301,161.54
  5. Step 5: Solve for x
    x = 113,100,301,161.54/376,587
  6. Step 6: Final answer
    x = 300,329.81

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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.