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Finding the Fourth Proportional to 171,863.68, 257,832.96 and 70,662.48

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Solution

The fourth proportional to 171,863.68, 257,832.96 and 70,662.48 is: 106,009.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,863.68 : 257,832.96 = 70,662.48 : x
  2. Step 2: Convert to fraction form
    171,863.68/257,832.96 = 70,662.48/x
  3. Step 3: Cross multiply
    171,863.68x = 257,832.96 × 70,662.48
  4. Step 4: Simplify right side
    171,863.68x = 18,219,116,379.34
  5. Step 5: Solve for x
    x = 18,219,116,379.34/171,863.68
  6. Step 6: Final answer
    x = 106,009.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.