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Finding the Fourth Proportional to 383,633.51, 529,402.11 and 211,558.73

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Solution

The fourth proportional to 383,633.51, 529,402.11 and 211,558.73 is: 291,944.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,633.51 : 529,402.11 = 211,558.73 : x
  2. Step 2: Convert to fraction form
    383,633.51/529,402.11 = 211,558.73/x
  3. Step 3: Cross multiply
    383,633.51x = 529,402.11 × 211,558.73
  4. Step 4: Simplify right side
    383,633.51x = 111,999,638,050.92
  5. Step 5: Solve for x
    x = 111,999,638,050.92/383,633.51
  6. Step 6: Final answer
    x = 291,944.36

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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.