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Finding the Fourth Proportional to 339,690.32, 468,778.47 and 186,734.96

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Solution

The fourth proportional to 339,690.32, 468,778.47 and 186,734.96 is: 257,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,690.32 : 468,778.47 = 186,734.96 : x
  2. Step 2: Convert to fraction form
    339,690.32/468,778.47 = 186,734.96/x
  3. Step 3: Cross multiply
    339,690.32x = 468,778.47 × 186,734.96
  4. Step 4: Simplify right side
    339,690.32x = 87,537,326,500.42
  5. Step 5: Solve for x
    x = 87,537,326,500.42/339,690.32
  6. Step 6: Final answer
    x = 257,697.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.