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Finding the Fourth Proportional to 292,898.72, 404,286.16 and 170,419.92

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Solution

The fourth proportional to 292,898.72, 404,286.16 and 170,419.92 is: 235,229.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,898.72 : 404,286.16 = 170,419.92 : x
  2. Step 2: Convert to fraction form
    292,898.72/404,286.16 = 170,419.92/x
  3. Step 3: Cross multiply
    292,898.72x = 404,286.16 × 170,419.92
  4. Step 4: Simplify right side
    292,898.72x = 68,898,415,044.31
  5. Step 5: Solve for x
    x = 68,898,415,044.31/292,898.72
  6. Step 6: Final answer
    x = 235,229.48

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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.