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Finding the Fourth Proportional to 171,815.60, 257,414.52 and 161,686.88

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Solution

The fourth proportional to 171,815.60, 257,414.52 and 161,686.88 is: 242,239.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,815.60 : 257,414.52 = 161,686.88 : x
  2. Step 2: Convert to fraction form
    171,815.60/257,414.52 = 161,686.88/x
  3. Step 3: Cross multiply
    171,815.60x = 257,414.52 × 161,686.88
  4. Step 4: Simplify right side
    171,815.60x = 41,620,550,605.50
  5. Step 5: Solve for x
    x = 41,620,550,605.50/171,815.60
  6. Step 6: Final answer
    x = 242,239.65

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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.