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Finding the Fourth Proportional to 116,442.85, 160,638.37 and 68,673.91

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Solution

The fourth proportional to 116,442.85, 160,638.37 and 68,673.91 is: 94,738.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,442.85 : 160,638.37 = 68,673.91 : x
  2. Step 2: Convert to fraction form
    116,442.85/160,638.37 = 68,673.91/x
  3. Step 3: Cross multiply
    116,442.85x = 160,638.37 × 68,673.91
  4. Step 4: Simplify right side
    116,442.85x = 11,031,664,963.93
  5. Step 5: Solve for x
    x = 11,031,664,963.93/116,442.85
  6. Step 6: Final answer
    x = 94,738.88

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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.