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Finding the Fourth Proportional to 155,996.84, 215,222.22 and 127,266.44

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Solution

The fourth proportional to 155,996.84, 215,222.22 and 127,266.44 is: 175,584.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,996.84 : 215,222.22 = 127,266.44 : x
  2. Step 2: Convert to fraction form
    155,996.84/215,222.22 = 127,266.44/x
  3. Step 3: Cross multiply
    155,996.84x = 215,222.22 × 127,266.44
  4. Step 4: Simplify right side
    155,996.84x = 27,390,565,748.30
  5. Step 5: Solve for x
    x = 27,390,565,748.30/155,996.84
  6. Step 6: Final answer
    x = 175,584.11

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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.