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Finding the Fourth Proportional to 172,592.27, 258,923.70 and 72,752.48

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Solution

The fourth proportional to 172,592.27, 258,923.70 and 72,752.48 is: 109,143.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,592.27 : 258,923.70 = 72,752.48 : x
  2. Step 2: Convert to fraction form
    172,592.27/258,923.70 = 72,752.48/x
  3. Step 3: Cross multiply
    172,592.27x = 258,923.70 × 72,752.48
  4. Step 4: Simplify right side
    172,592.27x = 18,837,340,011.16
  5. Step 5: Solve for x
    x = 18,837,340,011.16/172,592.27
  6. Step 6: Final answer
    x = 109,143.59

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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.