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Finding the Fourth Proportional to 124,751.71, 172,157.41 and 67,391.04

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Solution

The fourth proportional to 124,751.71, 172,157.41 and 67,391.04 is: 92,999.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,751.71 : 172,157.41 = 67,391.04 : x
  2. Step 2: Convert to fraction form
    124,751.71/172,157.41 = 67,391.04/x
  3. Step 3: Cross multiply
    124,751.71x = 172,157.41 × 67,391.04
  4. Step 4: Simplify right side
    124,751.71x = 11,601,866,903.61
  5. Step 5: Solve for x
    x = 11,601,866,903.61/124,751.71
  6. Step 6: Final answer
    x = 92,999.66

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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.