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Finding the Fourth Proportional to 383,635.72, 529,419.56 and 222,586.68

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Solution

The fourth proportional to 383,635.72, 529,419.56 and 222,586.68 is: 307,170.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,635.72 : 529,419.56 = 222,586.68 : x
  2. Step 2: Convert to fraction form
    383,635.72/529,419.56 = 222,586.68/x
  3. Step 3: Cross multiply
    383,635.72x = 529,419.56 × 222,586.68
  4. Step 4: Simplify right side
    383,635.72x = 117,841,742,187.46
  5. Step 5: Solve for x
    x = 117,841,742,187.46/383,635.72
  6. Step 6: Final answer
    x = 307,170.93

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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.