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Finding the Fourth Proportional to 465,487.92, 642,373.59 and 261,538.83

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Solution

The fourth proportional to 465,487.92, 642,373.59 and 261,538.83 is: 360,923.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,487.92 : 642,373.59 = 261,538.83 : x
  2. Step 2: Convert to fraction form
    465,487.92/642,373.59 = 261,538.83/x
  3. Step 3: Cross multiply
    465,487.92x = 642,373.59 × 261,538.83
  4. Step 4: Simplify right side
    465,487.92x = 168,005,637,151.50
  5. Step 5: Solve for x
    x = 168,005,637,151.50/465,487.92
  6. Step 6: Final answer
    x = 360,923.73

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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.