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Finding the Fourth Proportional to 381,751.50, 526,838.94 and 211,996.56

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Solution

The fourth proportional to 381,751.50, 526,838.94 and 211,996.56 is: 292,567.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,751.50 : 526,838.94 = 211,996.56 : x
  2. Step 2: Convert to fraction form
    381,751.50/526,838.94 = 211,996.56/x
  3. Step 3: Cross multiply
    381,751.50x = 526,838.94 × 211,996.56
  4. Step 4: Simplify right side
    381,751.50x = 111,688,042,954.05
  5. Step 5: Solve for x
    x = 111,688,042,954.05/381,751.50
  6. Step 6: Final answer
    x = 292,567.40

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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.