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Finding the Fourth Proportional to 171,664.30, 257,496.45 and 164,665.90

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Solution

The fourth proportional to 171,664.30, 257,496.45 and 164,665.90 is: 246,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,664.30 : 257,496.45 = 164,665.90 : x
  2. Step 2: Convert to fraction form
    171,664.30/257,496.45 = 164,665.90/x
  3. Step 3: Cross multiply
    171,664.30x = 257,496.45 × 164,665.90
  4. Step 4: Simplify right side
    171,664.30x = 42,400,884,686.06
  5. Step 5: Solve for x
    x = 42,400,884,686.06/171,664.30
  6. Step 6: Final answer
    x = 246,998.85

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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.