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Finding the Fourth Proportional to 110,660.40, 166,032.52 and 66,318.98

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Solution

The fourth proportional to 110,660.40, 166,032.52 and 66,318.98 is: 99,503.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,660.40 : 166,032.52 = 66,318.98 : x
  2. Step 2: Convert to fraction form
    110,660.40/166,032.52 = 66,318.98/x
  3. Step 3: Cross multiply
    110,660.40x = 166,032.52 × 66,318.98
  4. Step 4: Simplify right side
    110,660.40x = 11,011,106,377.27
  5. Step 5: Solve for x
    x = 11,011,106,377.27/110,660.40
  6. Step 6: Final answer
    x = 99,503.58

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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.