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Finding the Fourth Proportional to 124,762.25, 172,173.12 and 68,174.84

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Solution

The fourth proportional to 124,762.25, 172,173.12 and 68,174.84 is: 94,081.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,762.25 : 172,173.12 = 68,174.84 : x
  2. Step 2: Convert to fraction form
    124,762.25/172,173.12 = 68,174.84/x
  3. Step 3: Cross multiply
    124,762.25x = 172,173.12 × 68,174.84
  4. Step 4: Simplify right side
    124,762.25x = 11,737,874,908.30
  5. Step 5: Solve for x
    x = 11,737,874,908.30/124,762.25
  6. Step 6: Final answer
    x = 94,081.94

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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.