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Finding the Fourth Proportional to 382,768.37, 528,211.37 and 212,998.85

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Solution

The fourth proportional to 382,768.37, 528,211.37 and 212,998.85 is: 293,933.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,768.37 : 528,211.37 = 212,998.85 : x
  2. Step 2: Convert to fraction form
    382,768.37/528,211.37 = 212,998.85/x
  3. Step 3: Cross multiply
    382,768.37x = 528,211.37 × 212,998.85
  4. Step 4: Simplify right side
    382,768.37x = 112,508,413,301.93
  5. Step 5: Solve for x
    x = 112,508,413,301.93/382,768.37
  6. Step 6: Final answer
    x = 293,933.41

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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.