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Finding the Fourth Proportional to 171,605.20, 257,407.80 and 92,873.20

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Solution

The fourth proportional to 171,605.20, 257,407.80 and 92,873.20 is: 139,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,605.20 : 257,407.80 = 92,873.20 : x
  2. Step 2: Convert to fraction form
    171,605.20/257,407.80 = 92,873.20/x
  3. Step 3: Cross multiply
    171,605.20x = 257,407.80 × 92,873.20
  4. Step 4: Simplify right side
    171,605.20x = 23,906,286,090.96
  5. Step 5: Solve for x
    x = 23,906,286,090.96/171,605.20
  6. Step 6: Final answer
    x = 139,309.80

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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.