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Finding the Fourth Proportional to 86,176.80, 129,303 and 33,568.11

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Solution

The fourth proportional to 86,176.80, 129,303 and 33,568.11 is: 50,366.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,176.80 : 129,303 = 33,568.11 : x
  2. Step 2: Convert to fraction form
    86,176.80/129,303 = 33,568.11/x
  3. Step 3: Cross multiply
    86,176.80x = 129,303 × 33,568.11
  4. Step 4: Simplify right side
    86,176.80x = 4,340,457,327.33
  5. Step 5: Solve for x
    x = 4,340,457,327.33/86,176.80
  6. Step 6: Final answer
    x = 50,366.89

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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.