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Finding the Fourth Proportional to 172,623.06, 258,830.91 and 67,491.54

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Solution

The fourth proportional to 172,623.06, 258,830.91 and 67,491.54 is: 101,196.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,623.06 : 258,830.91 = 67,491.54 : x
  2. Step 2: Convert to fraction form
    172,623.06/258,830.91 = 67,491.54/x
  3. Step 3: Cross multiply
    172,623.06x = 258,830.91 × 67,491.54
  4. Step 4: Simplify right side
    172,623.06x = 17,468,896,715.50
  5. Step 5: Solve for x
    x = 17,468,896,715.50/172,623.06
  6. Step 6: Final answer
    x = 101,196.77

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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.