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Finding the Fourth Proportional to 125,293.94, 172,738.37 and 99,537.96

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Solution

The fourth proportional to 125,293.94, 172,738.37 and 99,537.96 is: 137,229.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,293.94 : 172,738.37 = 99,537.96 : x
  2. Step 2: Convert to fraction form
    125,293.94/172,738.37 = 99,537.96/x
  3. Step 3: Cross multiply
    125,293.94x = 172,738.37 × 99,537.96
  4. Step 4: Simplify right side
    125,293.94x = 17,194,025,860.14
  5. Step 5: Solve for x
    x = 17,194,025,860.14/125,293.94
  6. Step 6: Final answer
    x = 137,229.51

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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.