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Finding the Fourth Proportional to 86,568.96, 129,911.76 and 33,972.24

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Solution

The fourth proportional to 86,568.96, 129,911.76 and 33,972.24 is: 50,981.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,568.96 : 129,911.76 = 33,972.24 : x
  2. Step 2: Convert to fraction form
    86,568.96/129,911.76 = 33,972.24/x
  3. Step 3: Cross multiply
    86,568.96x = 129,911.76 × 33,972.24
  4. Step 4: Simplify right side
    86,568.96x = 4,413,393,489.54
  5. Step 5: Solve for x
    x = 4,413,393,489.54/86,568.96
  6. Step 6: Final answer
    x = 50,981.25

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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.