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Finding the Fourth Proportional to 292,381.40, 403,481.96 and 163,321.68

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Solution

The fourth proportional to 292,381.40, 403,481.96 and 163,321.68 is: 225,381.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,381.40 : 403,481.96 = 163,321.68 : x
  2. Step 2: Convert to fraction form
    292,381.40/403,481.96 = 163,321.68/x
  3. Step 3: Cross multiply
    292,381.40x = 403,481.96 × 163,321.68
  4. Step 4: Simplify right side
    292,381.40x = 65,897,351,556.89
  5. Step 5: Solve for x
    x = 65,897,351,556.89/292,381.40
  6. Step 6: Final answer
    x = 225,381.48

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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.