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Finding the Fourth Proportional to 381,316.06, 526,279.11 and 211,604.86

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Solution

The fourth proportional to 381,316.06, 526,279.11 and 211,604.86 is: 292,049.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,316.06 : 526,279.11 = 211,604.86 : x
  2. Step 2: Convert to fraction form
    381,316.06/526,279.11 = 211,604.86/x
  3. Step 3: Cross multiply
    381,316.06x = 526,279.11 × 211,604.86
  4. Step 4: Simplify right side
    381,316.06x = 111,363,217,392.48
  5. Step 5: Solve for x
    x = 111,363,217,392.48/381,316.06
  6. Step 6: Final answer
    x = 292,049.64

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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.