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Finding the Fourth Proportional to 381,791.87, 526,858.34 and 212,036.93

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Solution

The fourth proportional to 381,791.87, 526,858.34 and 212,036.93 is: 292,602.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,791.87 : 526,858.34 = 212,036.93 : x
  2. Step 2: Convert to fraction form
    381,791.87/526,858.34 = 212,036.93/x
  3. Step 3: Cross multiply
    381,791.87x = 526,858.34 × 212,036.93
  4. Step 4: Simplify right side
    381,791.87x = 111,713,424,138.82
  5. Step 5: Solve for x
    x = 111,713,424,138.82/381,791.87
  6. Step 6: Final answer
    x = 292,602.94

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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.