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Finding the Fourth Proportional to 86,562.15, 129,764.86 and 33,957.51

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Solution

The fourth proportional to 86,562.15, 129,764.86 and 33,957.51 is: 50,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,562.15 : 129,764.86 = 33,957.51 : x
  2. Step 2: Convert to fraction form
    86,562.15/129,764.86 = 33,957.51/x
  3. Step 3: Cross multiply
    86,562.15x = 129,764.86 × 33,957.51
  4. Step 4: Simplify right side
    86,562.15x = 4,406,491,361.31
  5. Step 5: Solve for x
    x = 4,406,491,361.31/86,562.15
  6. Step 6: Final answer
    x = 50,905.52

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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.