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Finding the Fourth Proportional to 422,827.91, 634,335.15 and 123,331.92

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Solution

The fourth proportional to 422,827.91, 634,335.15 and 123,331.92 is: 185,025.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,827.91 : 634,335.15 = 123,331.92 : x
  2. Step 2: Convert to fraction form
    422,827.91/634,335.15 = 123,331.92/x
  3. Step 3: Cross multiply
    422,827.91x = 634,335.15 × 123,331.92
  4. Step 4: Simplify right side
    422,827.91x = 78,233,774,715.19
  5. Step 5: Solve for x
    x = 78,233,774,715.19/422,827.91
  6. Step 6: Final answer
    x = 185,025.10

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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.