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Finding the Fourth Proportional to 120,355.68, 166,105.26 and 70,054.68

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Solution

The fourth proportional to 120,355.68, 166,105.26 and 70,054.68 is: 96,683.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,355.68 : 166,105.26 = 70,054.68 : x
  2. Step 2: Convert to fraction form
    120,355.68/166,105.26 = 70,054.68/x
  3. Step 3: Cross multiply
    120,355.68x = 166,105.26 × 70,054.68
  4. Step 4: Simplify right side
    120,355.68x = 11,636,450,835.62
  5. Step 5: Solve for x
    x = 11,636,450,835.62/120,355.68
  6. Step 6: Final answer
    x = 96,683.85

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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.