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Finding the Fourth Proportional to 122,446.80, 183,670.20 and 108,668.70

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Solution

The fourth proportional to 122,446.80, 183,670.20 and 108,668.70 is: 163,003.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,446.80 : 183,670.20 = 108,668.70 : x
  2. Step 2: Convert to fraction form
    122,446.80/183,670.20 = 108,668.70/x
  3. Step 3: Cross multiply
    122,446.80x = 183,670.20 × 108,668.70
  4. Step 4: Simplify right side
    122,446.80x = 19,959,201,862.74
  5. Step 5: Solve for x
    x = 19,959,201,862.74/122,446.80
  6. Step 6: Final answer
    x = 163,003.05

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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.