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Finding the Fourth Proportional to 111,254.53, 166,991.44 and 79,269.13

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Solution

The fourth proportional to 111,254.53, 166,991.44 and 79,269.13 is: 118,981.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,254.53 : 166,991.44 = 79,269.13 : x
  2. Step 2: Convert to fraction form
    111,254.53/166,991.44 = 79,269.13/x
  3. Step 3: Cross multiply
    111,254.53x = 166,991.44 × 79,269.13
  4. Step 4: Simplify right side
    111,254.53x = 13,237,266,166.25
  5. Step 5: Solve for x
    x = 13,237,266,166.25/111,254.53
  6. Step 6: Final answer
    x = 118,981.82

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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.