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Finding the Fourth Proportional to 619,330.56, 927,419.52 and 408,328.32

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Solution

The fourth proportional to 619,330.56, 927,419.52 and 408,328.32 is: 611,453.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,330.56 : 927,419.52 = 408,328.32 : x
  2. Step 2: Convert to fraction form
    619,330.56/927,419.52 = 408,328.32/x
  3. Step 3: Cross multiply
    619,330.56x = 927,419.52 × 408,328.32
  4. Step 4: Simplify right side
    619,330.56x = 378,691,654,536.81
  5. Step 5: Solve for x
    x = 378,691,654,536.81/619,330.56
  6. Step 6: Final answer
    x = 611,453.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.