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Finding the Fourth Proportional to 363,915.71, 502,205.67 and 211,044.54

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Solution

The fourth proportional to 363,915.71, 502,205.67 and 211,044.54 is: 291,242.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,915.71 : 502,205.67 = 211,044.54 : x
  2. Step 2: Convert to fraction form
    363,915.71/502,205.67 = 211,044.54/x
  3. Step 3: Cross multiply
    363,915.71x = 502,205.67 × 211,044.54
  4. Step 4: Simplify right side
    363,915.71x = 105,987,761,571.90
  5. Step 5: Solve for x
    x = 105,987,761,571.90/363,915.71
  6. Step 6: Final answer
    x = 291,242.61

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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.