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Finding the Fourth Proportional to 223,761.69, 308,791.17 and 123,159.69

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Solution

The fourth proportional to 223,761.69, 308,791.17 and 123,159.69 is: 169,960.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,761.69 : 308,791.17 = 123,159.69 : x
  2. Step 2: Convert to fraction form
    223,761.69/308,791.17 = 123,159.69/x
  3. Step 3: Cross multiply
    223,761.69x = 308,791.17 × 123,159.69
  4. Step 4: Simplify right side
    223,761.69x = 38,030,624,771.94
  5. Step 5: Solve for x
    x = 38,030,624,771.94/223,761.69
  6. Step 6: Final answer
    x = 169,960.39

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1.5x scale

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.