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Finding the Fourth Proportional to 125,992.51, 173,871.75 and 69,403.93

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Solution

The fourth proportional to 125,992.51, 173,871.75 and 69,403.93 is: 95,778.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,992.51 : 173,871.75 = 69,403.93 : x
  2. Step 2: Convert to fraction form
    125,992.51/173,871.75 = 69,403.93/x
  3. Step 3: Cross multiply
    125,992.51x = 173,871.75 × 69,403.93
  4. Step 4: Simplify right side
    125,992.51x = 12,067,382,765.98
  5. Step 5: Solve for x
    x = 12,067,382,765.98/125,992.51
  6. Step 6: Final answer
    x = 95,778.57

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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.