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Finding the Fourth Proportional to 223,700.85, 308,712.46 and 126,911.24

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Solution

The fourth proportional to 223,700.85, 308,712.46 and 126,911.24 is: 175,140.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,700.85 : 308,712.46 = 126,911.24 : x
  2. Step 2: Convert to fraction form
    223,700.85/308,712.46 = 126,911.24/x
  3. Step 3: Cross multiply
    223,700.85x = 308,712.46 × 126,911.24
  4. Step 4: Simplify right side
    223,700.85x = 39,179,081,556.55
  5. Step 5: Solve for x
    x = 39,179,081,556.55/223,700.85
  6. Step 6: Final answer
    x = 175,140.51

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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.