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Finding the Fourth Proportional to 172,170.21, 258,107.41 and 59,835.83

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Solution

The fourth proportional to 172,170.21, 258,107.41 and 59,835.83 is: 89,702.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,170.21 : 258,107.41 = 59,835.83 : x
  2. Step 2: Convert to fraction form
    172,170.21/258,107.41 = 59,835.83/x
  3. Step 3: Cross multiply
    172,170.21x = 258,107.41 × 59,835.83
  4. Step 4: Simplify right side
    172,170.21x = 15,444,071,731.96
  5. Step 5: Solve for x
    x = 15,444,071,731.96/172,170.21
  6. Step 6: Final answer
    x = 89,702.35

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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.