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Finding the Fourth Proportional to 86,137.56, 129,239.28 and 33,583.68

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Solution

The fourth proportional to 86,137.56, 129,239.28 and 33,583.68 is: 50,388.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,137.56 : 129,239.28 = 33,583.68 : x
  2. Step 2: Convert to fraction form
    86,137.56/129,239.28 = 33,583.68/x
  3. Step 3: Cross multiply
    86,137.56x = 129,239.28 × 33,583.68
  4. Step 4: Simplify right side
    86,137.56x = 4,340,330,622.95
  5. Step 5: Solve for x
    x = 4,340,330,622.95/86,137.56
  6. Step 6: Final answer
    x = 50,388.36

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1.5x scale

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.