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Finding the Fourth Proportional to 118,960.78, 164,170.47 and 65,248.06

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Solution

The fourth proportional to 118,960.78, 164,170.47 and 65,248.06 is: 90,044.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,960.78 : 164,170.47 = 65,248.06 : x
  2. Step 2: Convert to fraction form
    118,960.78/164,170.47 = 65,248.06/x
  3. Step 3: Cross multiply
    118,960.78x = 164,170.47 × 65,248.06
  4. Step 4: Simplify right side
    118,960.78x = 10,711,804,676.79
  5. Step 5: Solve for x
    x = 10,711,804,676.79/118,960.78
  6. Step 6: Final answer
    x = 90,044.84

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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.