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Finding the Fourth Proportional to 172,407.06, 258,620.32 and 52,467.93

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Solution

The fourth proportional to 172,407.06, 258,620.32 and 52,467.93 is: 78,704.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,407.06 : 258,620.32 = 52,467.93 : x
  2. Step 2: Convert to fraction form
    172,407.06/258,620.32 = 52,467.93/x
  3. Step 3: Cross multiply
    172,407.06x = 258,620.32 × 52,467.93
  4. Step 4: Simplify right side
    172,407.06x = 13,569,272,036.99
  5. Step 5: Solve for x
    x = 13,569,272,036.99/172,407.06
  6. Step 6: Final answer
    x = 78,704.85

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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.