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Finding the Fourth Proportional to 383,687.86, 529,492.67 and 211,612.48

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Solution

The fourth proportional to 383,687.86, 529,492.67 and 211,612.48 is: 292,027.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,687.86 : 529,492.67 = 211,612.48 : x
  2. Step 2: Convert to fraction form
    383,687.86/529,492.67 = 211,612.48/x
  3. Step 3: Cross multiply
    383,687.86x = 529,492.67 × 211,612.48
  4. Step 4: Simplify right side
    383,687.86x = 112,047,257,040.52
  5. Step 5: Solve for x
    x = 112,047,257,040.52/383,687.86
  6. Step 6: Final answer
    x = 292,027.11

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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.