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Finding the Fourth Proportional to 383,856.60, 529,738.14 and 211,773.72

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Solution

The fourth proportional to 383,856.60, 529,738.14 and 211,773.72 is: 292,256.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,856.60 : 529,738.14 = 211,773.72 : x
  2. Step 2: Convert to fraction form
    383,856.60/529,738.14 = 211,773.72/x
  3. Step 3: Cross multiply
    383,856.60x = 529,738.14 × 211,773.72
  4. Step 4: Simplify right side
    383,856.60x = 112,184,616,533.68
  5. Step 5: Solve for x
    x = 112,184,616,533.68/383,856.60
  6. Step 6: Final answer
    x = 292,256.58

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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.