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Finding the Fourth Proportional to 124,970.66, 172,450.94 and 71,257.94

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Solution

The fourth proportional to 124,970.66, 172,450.94 and 71,257.94 is: 98,331.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,970.66 : 172,450.94 = 71,257.94 : x
  2. Step 2: Convert to fraction form
    124,970.66/172,450.94 = 71,257.94/x
  3. Step 3: Cross multiply
    124,970.66x = 172,450.94 × 71,257.94
  4. Step 4: Simplify right side
    124,970.66x = 12,288,498,735.46
  5. Step 5: Solve for x
    x = 12,288,498,735.46/124,970.66
  6. Step 6: Final answer
    x = 98,331.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.