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Finding the Fourth Proportional to 111,677.81, 154,116 and 60,690.96

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Solution

The fourth proportional to 111,677.81, 154,116 and 60,690.96 is: 83,753.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,677.81 : 154,116 = 60,690.96 : x
  2. Step 2: Convert to fraction form
    111,677.81/154,116 = 60,690.96/x
  3. Step 3: Cross multiply
    111,677.81x = 154,116 × 60,690.96
  4. Step 4: Simplify right side
    111,677.81x = 9,353,447,991.36
  5. Step 5: Solve for x
    x = 9,353,447,991.36/111,677.81
  6. Step 6: Final answer
    x = 83,753.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.