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Finding the Fourth Proportional to 124,792.13, 172,213.13 and 68,203.50

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Solution

The fourth proportional to 124,792.13, 172,213.13 and 68,203.50 is: 94,120.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,792.13 : 172,213.13 = 68,203.50 : x
  2. Step 2: Convert to fraction form
    124,792.13/172,213.13 = 68,203.50/x
  3. Step 3: Cross multiply
    124,792.13x = 172,213.13 × 68,203.50
  4. Step 4: Simplify right side
    124,792.13x = 11,745,537,870.94
  5. Step 5: Solve for x
    x = 11,745,537,870.94/124,792.13
  6. Step 6: Final answer
    x = 94,120.83

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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.