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Finding the Fourth Proportional to 171,664.68, 257,211.90 and 121,496.52

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Solution

The fourth proportional to 171,664.68, 257,211.90 and 121,496.52 is: 182,042.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,664.68 : 257,211.90 = 121,496.52 : x
  2. Step 2: Convert to fraction form
    171,664.68/257,211.90 = 121,496.52/x
  3. Step 3: Cross multiply
    171,664.68x = 257,211.90 × 121,496.52
  4. Step 4: Simplify right side
    171,664.68x = 31,250,350,752.59
  5. Step 5: Solve for x
    x = 31,250,350,752.59/171,664.68
  6. Step 6: Final answer
    x = 182,042.98

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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.