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Finding the Fourth Proportional to 99,764.73, 149,699.65 and 57,674.37

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Solution

The fourth proportional to 99,764.73, 149,699.65 and 57,674.37 is: 86,541.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,764.73 : 149,699.65 = 57,674.37 : x
  2. Step 2: Convert to fraction form
    99,764.73/149,699.65 = 57,674.37/x
  3. Step 3: Cross multiply
    99,764.73x = 149,699.65 × 57,674.37
  4. Step 4: Simplify right side
    99,764.73x = 8,633,833,366.09
  5. Step 5: Solve for x
    x = 8,633,833,366.09/99,764.73
  6. Step 6: Final answer
    x = 86,541.94

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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.