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Finding the Fourth Proportional to 383,778.36, 529,601.72 and 211,695.93

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Solution

The fourth proportional to 383,778.36, 529,601.72 and 211,695.93 is: 292,133.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,778.36 : 529,601.72 = 211,695.93 : x
  2. Step 2: Convert to fraction form
    383,778.36/529,601.72 = 211,695.93/x
  3. Step 3: Cross multiply
    383,778.36x = 529,601.72 × 211,695.93
  4. Step 4: Simplify right side
    383,778.36x = 112,114,527,586.52
  5. Step 5: Solve for x
    x = 112,114,527,586.52/383,778.36
  6. Step 6: Final answer
    x = 292,133.53

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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.