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Finding the Fourth Proportional to 399,856.32, 599,667.84 and 189,437.76

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Solution

The fourth proportional to 399,856.32, 599,667.84 and 189,437.76 is: 284,101.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,856.32 : 599,667.84 = 189,437.76 : x
  2. Step 2: Convert to fraction form
    399,856.32/599,667.84 = 189,437.76/x
  3. Step 3: Cross multiply
    399,856.32x = 599,667.84 × 189,437.76
  4. Step 4: Simplify right side
    399,856.32x = 113,599,732,353.64
  5. Step 5: Solve for x
    x = 113,599,732,353.64/399,856.32
  6. Step 6: Final answer
    x = 284,101.38

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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.