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Finding the Fourth Proportional to 383,479.31, 529,203.11 and 211,393.58

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Solution

The fourth proportional to 383,479.31, 529,203.11 and 211,393.58 is: 291,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,479.31 : 529,203.11 = 211,393.58 : x
  2. Step 2: Convert to fraction form
    383,479.31/529,203.11 = 211,393.58/x
  3. Step 3: Cross multiply
    383,479.31x = 529,203.11 × 211,393.58
  4. Step 4: Simplify right side
    383,479.31x = 111,870,136,267.05
  5. Step 5: Solve for x
    x = 111,870,136,267.05/383,479.31
  6. Step 6: Final answer
    x = 291,724.05

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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.