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Finding the Fourth Proportional to 127,616.53, 190,943.83 and 76,134.82

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Solution

The fourth proportional to 127,616.53, 190,943.83 and 76,134.82 is: 113,915.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,616.53 : 190,943.83 = 76,134.82 : x
  2. Step 2: Convert to fraction form
    127,616.53/190,943.83 = 76,134.82/x
  3. Step 3: Cross multiply
    127,616.53x = 190,943.83 × 76,134.82
  4. Step 4: Simplify right side
    127,616.53x = 14,537,474,102.99
  5. Step 5: Solve for x
    x = 14,537,474,102.99/127,616.53
  6. Step 6: Final answer
    x = 113,915.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.