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Finding the Fourth Proportional to 465,486.92, 642,372.21 and 261,537.83

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Solution

The fourth proportional to 465,486.92, 642,372.21 and 261,537.83 is: 360,922.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,486.92 : 642,372.21 = 261,537.83 : x
  2. Step 2: Convert to fraction form
    465,486.92/642,372.21 = 261,537.83/x
  3. Step 3: Cross multiply
    465,486.92x = 642,372.21 × 261,537.83
  4. Step 4: Simplify right side
    465,486.92x = 168,004,630,643.84
  5. Step 5: Solve for x
    x = 168,004,630,643.84/465,486.92
  6. Step 6: Final answer
    x = 360,922.35

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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.