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Finding the Fourth Proportional to 276,674.20, 415,400.10 and 171,698.20

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Solution

The fourth proportional to 276,674.20, 415,400.10 and 171,698.20 is: 257,788.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,674.20 : 415,400.10 = 171,698.20 : x
  2. Step 2: Convert to fraction form
    276,674.20/415,400.10 = 171,698.20/x
  3. Step 3: Cross multiply
    276,674.20x = 415,400.10 × 171,698.20
  4. Step 4: Simplify right side
    276,674.20x = 71,323,449,449.82
  5. Step 5: Solve for x
    x = 71,323,449,449.82/276,674.20
  6. Step 6: Final answer
    x = 257,788.58

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1.5x scale

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.