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Finding the Fourth Proportional to 269,063.52, 371,307.72 and 155,951.88

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Solution

The fourth proportional to 269,063.52, 371,307.72 and 155,951.88 is: 215,213.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,063.52 : 371,307.72 = 155,951.88 : x
  2. Step 2: Convert to fraction form
    269,063.52/371,307.72 = 155,951.88/x
  3. Step 3: Cross multiply
    269,063.52x = 371,307.72 × 155,951.88
  4. Step 4: Simplify right side
    269,063.52x = 57,906,136,992.51
  5. Step 5: Solve for x
    x = 57,906,136,992.51/269,063.52
  6. Step 6: Final answer
    x = 215,213.63

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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.