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Finding the Fourth Proportional to 383,462.40, 529,201.24 and 211,380.14

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Solution

The fourth proportional to 383,462.40, 529,201.24 and 211,380.14 is: 291,717.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,462.40 : 529,201.24 = 211,380.14 : x
  2. Step 2: Convert to fraction form
    383,462.40/529,201.24 = 211,380.14/x
  3. Step 3: Cross multiply
    383,462.40x = 529,201.24 × 211,380.14
  4. Step 4: Simplify right side
    383,462.40x = 111,862,632,199.37
  5. Step 5: Solve for x
    x = 111,862,632,199.37/383,462.40
  6. Step 6: Final answer
    x = 291,717.34

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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.