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Finding the Fourth Proportional to 381,342.17, 526,252.25 and 211,575.89

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Solution

The fourth proportional to 381,342.17, 526,252.25 and 211,575.89 is: 291,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,342.17 : 526,252.25 = 211,575.89 : x
  2. Step 2: Convert to fraction form
    381,342.17/526,252.25 = 211,575.89/x
  3. Step 3: Cross multiply
    381,342.17x = 526,252.25 × 211,575.89
  4. Step 4: Simplify right side
    381,342.17x = 111,342,286,055.93
  5. Step 5: Solve for x
    x = 111,342,286,055.93/381,342.17
  6. Step 6: Final answer
    x = 291,974.76

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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.