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Finding the Fourth Proportional to 86,456.52, 129,648.06 and 33,857.64

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Solution

The fourth proportional to 86,456.52, 129,648.06 and 33,857.64 is: 50,772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,456.52 : 129,648.06 = 33,857.64 : x
  2. Step 2: Convert to fraction form
    86,456.52/129,648.06 = 33,857.64/x
  3. Step 3: Cross multiply
    86,456.52x = 129,648.06 × 33,857.64
  4. Step 4: Simplify right side
    86,456.52x = 4,389,577,342.18
  5. Step 5: Solve for x
    x = 4,389,577,342.18/86,456.52
  6. Step 6: Final answer
    x = 50,772.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.