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Finding the Fourth Proportional to 223,791.67, 308,838.98 and 121,823.74

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Solution

The fourth proportional to 223,791.67, 308,838.98 and 121,823.74 is: 168,120.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,791.67 : 308,838.98 = 121,823.74 : x
  2. Step 2: Convert to fraction form
    223,791.67/308,838.98 = 121,823.74/x
  3. Step 3: Cross multiply
    223,791.67x = 308,838.98 × 121,823.74
  4. Step 4: Simplify right side
    223,791.67x = 37,623,919,601.39
  5. Step 5: Solve for x
    x = 37,623,919,601.39/223,791.67
  6. Step 6: Final answer
    x = 168,120.29

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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.