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Finding the Fourth Proportional to 116,377.90, 160,601.69 and 66,076.90

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Solution

The fourth proportional to 116,377.90, 160,601.69 and 66,076.90 is: 91,186.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,377.90 : 160,601.69 = 66,076.90 : x
  2. Step 2: Convert to fraction form
    116,377.90/160,601.69 = 66,076.90/x
  3. Step 3: Cross multiply
    116,377.90x = 160,601.69 × 66,076.90
  4. Step 4: Simplify right side
    116,377.90x = 10,612,061,809.96
  5. Step 5: Solve for x
    x = 10,612,061,809.96/116,377.90
  6. Step 6: Final answer
    x = 91,186.23

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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.