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Finding the Fourth Proportional to 390,026.20, 584,383.20 and 333,601.60

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Solution

The fourth proportional to 390,026.20, 584,383.20 and 333,601.60 is: 499,841.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,026.20 : 584,383.20 = 333,601.60 : x
  2. Step 2: Convert to fraction form
    390,026.20/584,383.20 = 333,601.60/x
  3. Step 3: Cross multiply
    390,026.20x = 584,383.20 × 333,601.60
  4. Step 4: Simplify right side
    390,026.20x = 194,951,170,533.12
  5. Step 5: Solve for x
    x = 194,951,170,533.12/390,026.20
  6. Step 6: Final answer
    x = 499,841.22

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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.