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Finding the Fourth Proportional to 381,334.20, 526,234.16 and 211,564.68

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Solution

The fourth proportional to 381,334.20, 526,234.16 and 211,564.68 is: 291,955.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,334.20 : 526,234.16 = 211,564.68 : x
  2. Step 2: Convert to fraction form
    381,334.20/526,234.16 = 211,564.68/x
  3. Step 3: Cross multiply
    381,334.20x = 526,234.16 × 211,564.68
  4. Step 4: Simplify right side
    381,334.20x = 111,332,561,665.47
  5. Step 5: Solve for x
    x = 111,332,561,665.47/381,334.20
  6. Step 6: Final answer
    x = 291,955.35

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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.