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Finding the Fourth Proportional to 122,328.70, 183,493.05 and 118,051.90

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Solution

The fourth proportional to 122,328.70, 183,493.05 and 118,051.90 is: 177,077.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,328.70 : 183,493.05 = 118,051.90 : x
  2. Step 2: Convert to fraction form
    122,328.70/183,493.05 = 118,051.90/x
  3. Step 3: Cross multiply
    122,328.70x = 183,493.05 × 118,051.90
  4. Step 4: Simplify right side
    122,328.70x = 21,661,703,189.30
  5. Step 5: Solve for x
    x = 21,661,703,189.30/122,328.70
  6. Step 6: Final answer
    x = 177,077.85

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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.