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Finding the Fourth Proportional to 219,393.48, 302,763.78 and 118,791.48

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Solution

The fourth proportional to 219,393.48, 302,763.78 and 118,791.48 is: 163,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,393.48 : 302,763.78 = 118,791.48 : x
  2. Step 2: Convert to fraction form
    219,393.48/302,763.78 = 118,791.48/x
  3. Step 3: Cross multiply
    219,393.48x = 302,763.78 × 118,791.48
  4. Step 4: Simplify right side
    219,393.48x = 35,965,757,516.59
  5. Step 5: Solve for x
    x = 35,965,757,516.59/219,393.48
  6. Step 6: Final answer
    x = 163,932.66

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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.