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Finding the Fourth Proportional to 381,325.78, 526,236.33 and 209,252.22

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Solution

The fourth proportional to 381,325.78, 526,236.33 and 209,252.22 is: 288,771.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,325.78 : 526,236.33 = 209,252.22 : x
  2. Step 2: Convert to fraction form
    381,325.78/526,236.33 = 209,252.22/x
  3. Step 3: Cross multiply
    381,325.78x = 526,236.33 × 209,252.22
  4. Step 4: Simplify right side
    381,325.78x = 110,116,120,297.15
  5. Step 5: Solve for x
    x = 110,116,120,297.15/381,325.78
  6. Step 6: Final answer
    x = 288,771.77

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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.