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Finding the Fourth Proportional to 248,072.10, 342,316.17 and 171,672.90

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Solution

The fourth proportional to 248,072.10, 342,316.17 and 171,672.90 is: 236,892.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,072.10 : 342,316.17 = 171,672.90 : x
  2. Step 2: Convert to fraction form
    248,072.10/342,316.17 = 171,672.90/x
  3. Step 3: Cross multiply
    248,072.10x = 342,316.17 × 171,672.90
  4. Step 4: Simplify right side
    248,072.10x = 58,766,409,620.79
  5. Step 5: Solve for x
    x = 58,766,409,620.79/248,072.10
  6. Step 6: Final answer
    x = 236,892.46

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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.