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Finding the Fourth Proportional to 117,278.50, 161,843.19 and 65,595.02

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Solution

The fourth proportional to 117,278.50, 161,843.19 and 65,595.02 is: 90,520.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,278.50 : 161,843.19 = 65,595.02 : x
  2. Step 2: Convert to fraction form
    117,278.50/161,843.19 = 65,595.02/x
  3. Step 3: Cross multiply
    117,278.50x = 161,843.19 × 65,595.02
  4. Step 4: Simplify right side
    117,278.50x = 10,616,107,284.91
  5. Step 5: Solve for x
    x = 10,616,107,284.91/117,278.50
  6. Step 6: Final answer
    x = 90,520.49

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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.