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Finding the Fourth Proportional to 383,763.36, 529,601.91 and 211,686.56

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Solution

The fourth proportional to 383,763.36, 529,601.91 and 211,686.56 is: 292,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,763.36 : 529,601.91 = 211,686.56 : x
  2. Step 2: Convert to fraction form
    383,763.36/529,601.91 = 211,686.56/x
  3. Step 3: Cross multiply
    383,763.36x = 529,601.91 × 211,686.56
  4. Step 4: Simplify right side
    383,763.36x = 112,109,603,849.32
  5. Step 5: Solve for x
    x = 112,109,603,849.32/383,763.36
  6. Step 6: Final answer
    x = 292,132.12

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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.