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Finding the Fourth Proportional to 125,756.98, 173,545.80 and 68,396.86

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Solution

The fourth proportional to 125,756.98, 173,545.80 and 68,396.86 is: 94,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,756.98 : 173,545.80 = 68,396.86 : x
  2. Step 2: Convert to fraction form
    125,756.98/173,545.80 = 68,396.86/x
  3. Step 3: Cross multiply
    125,756.98x = 173,545.80 × 68,396.86
  4. Step 4: Simplify right side
    125,756.98x = 11,869,987,786.19
  5. Step 5: Solve for x
    x = 11,869,987,786.19/125,756.98
  6. Step 6: Final answer
    x = 94,388.30

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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.