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Finding the Fourth Proportional to 125,855.54, 173,678.38 and 68,492.86

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Solution

The fourth proportional to 125,855.54, 173,678.38 and 68,492.86 is: 94,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,855.54 : 173,678.38 = 68,492.86 : x
  2. Step 2: Convert to fraction form
    125,855.54/173,678.38 = 68,492.86/x
  3. Step 3: Cross multiply
    125,855.54x = 173,678.38 × 68,492.86
  4. Step 4: Simplify right side
    125,855.54x = 11,895,728,360.94
  5. Step 5: Solve for x
    x = 11,895,728,360.94/125,855.54
  6. Step 6: Final answer
    x = 94,518.91

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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.