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Finding the Fourth Proportional to 116,616.78, 160,939.31 and 65,634.39

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Solution

The fourth proportional to 116,616.78, 160,939.31 and 65,634.39 is: 90,580.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,616.78 : 160,939.31 = 65,634.39 : x
  2. Step 2: Convert to fraction form
    116,616.78/160,939.31 = 65,634.39/x
  3. Step 3: Cross multiply
    116,616.78x = 160,939.31 × 65,634.39
  4. Step 4: Simplify right side
    116,616.78x = 10,563,153,110.70
  5. Step 5: Solve for x
    x = 10,563,153,110.70/116,616.78
  6. Step 6: Final answer
    x = 90,580.04

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1.5x scale

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.