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Finding the Fourth Proportional to 338,138.75, 466,665.50 and 187,235.75

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Solution

The fourth proportional to 338,138.75, 466,665.50 and 187,235.75 is: 258,404.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,138.75 : 466,665.50 = 187,235.75 : x
  2. Step 2: Convert to fraction form
    338,138.75/466,665.50 = 187,235.75/x
  3. Step 3: Cross multiply
    338,138.75x = 466,665.50 × 187,235.75
  4. Step 4: Simplify right side
    338,138.75x = 87,376,464,891.63
  5. Step 5: Solve for x
    x = 87,376,464,891.63/338,138.75
  6. Step 6: Final answer
    x = 258,404.18

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1.5x scale

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.