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Finding the Fourth Proportional to 111,312.74, 166,984.84 and 36,438.96

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Solution

The fourth proportional to 111,312.74, 166,984.84 and 36,438.96 is: 54,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,312.74 : 166,984.84 = 36,438.96 : x
  2. Step 2: Convert to fraction form
    111,312.74/166,984.84 = 36,438.96/x
  3. Step 3: Cross multiply
    111,312.74x = 166,984.84 × 36,438.96
  4. Step 4: Simplify right side
    111,312.74x = 6,084,753,905.37
  5. Step 5: Solve for x
    x = 6,084,753,905.37/111,312.74
  6. Step 6: Final answer
    x = 54,663.59

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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.