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Finding the Fourth Proportional to 408,987.96, 564,257.32 and 236,811.96

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Solution

The fourth proportional to 408,987.96, 564,257.32 and 236,811.96 is: 326,715.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,987.96 : 564,257.32 = 236,811.96 : x
  2. Step 2: Convert to fraction form
    408,987.96/564,257.32 = 236,811.96/x
  3. Step 3: Cross multiply
    408,987.96x = 564,257.32 × 236,811.96
  4. Step 4: Simplify right side
    408,987.96x = 133,622,881,301.52
  5. Step 5: Solve for x
    x = 133,622,881,301.52/408,987.96
  6. Step 6: Final answer
    x = 326,715.93

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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.