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Finding the Fourth Proportional to 120,365.48, 166,103.94 and 67,373.48

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Solution

The fourth proportional to 120,365.48, 166,103.94 and 67,373.48 is: 92,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,365.48 : 166,103.94 = 67,373.48 : x
  2. Step 2: Convert to fraction form
    120,365.48/166,103.94 = 67,373.48/x
  3. Step 3: Cross multiply
    120,365.48x = 166,103.94 × 67,373.48
  4. Step 4: Simplify right side
    120,365.48x = 11,191,000,479.51
  5. Step 5: Solve for x
    x = 11,191,000,479.51/120,365.48
  6. Step 6: Final answer
    x = 92,975.17

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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.