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Finding the Fourth Proportional to 321,697.15, 482,053.64 and 171,958.72

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Solution

The fourth proportional to 321,697.15, 482,053.64 and 171,958.72 is: 257,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,697.15 : 482,053.64 = 171,958.72 : x
  2. Step 2: Convert to fraction form
    321,697.15/482,053.64 = 171,958.72/x
  3. Step 3: Cross multiply
    321,697.15x = 482,053.64 × 171,958.72
  4. Step 4: Simplify right side
    321,697.15x = 82,893,326,905.74
  5. Step 5: Solve for x
    x = 82,893,326,905.74/321,697.15
  6. Step 6: Final answer
    x = 257,675.04

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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.