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Finding the Fourth Proportional to 172,359.87, 258,544.13 and 47,701.95

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Solution

The fourth proportional to 172,359.87, 258,544.13 and 47,701.95 is: 71,554.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,359.87 : 258,544.13 = 47,701.95 : x
  2. Step 2: Convert to fraction form
    172,359.87/258,544.13 = 47,701.95/x
  3. Step 3: Cross multiply
    172,359.87x = 258,544.13 × 47,701.95
  4. Step 4: Simplify right side
    172,359.87x = 12,333,058,923.54
  5. Step 5: Solve for x
    x = 12,333,058,923.54/172,359.87
  6. Step 6: Final answer
    x = 71,554.12

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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.