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Finding the Fourth Proportional to 381,563.80, 526,581.94 and 211,800.76

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Solution

The fourth proportional to 381,563.80, 526,581.94 and 211,800.76 is: 292,298.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,563.80 : 526,581.94 = 211,800.76 : x
  2. Step 2: Convert to fraction form
    381,563.80/526,581.94 = 211,800.76/x
  3. Step 3: Cross multiply
    381,563.80x = 526,581.94 × 211,800.76
  4. Step 4: Simplify right side
    381,563.80x = 111,530,455,094.27
  5. Step 5: Solve for x
    x = 111,530,455,094.27/381,563.80
  6. Step 6: Final answer
    x = 292,298.31

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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.