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Finding the Fourth Proportional to 125,878.48, 173,712.30 and 68,518.02

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Solution

The fourth proportional to 125,878.48, 173,712.30 and 68,518.02 is: 94,554.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,878.48 : 173,712.30 = 68,518.02 : x
  2. Step 2: Convert to fraction form
    125,878.48/173,712.30 = 68,518.02/x
  3. Step 3: Cross multiply
    125,878.48x = 173,712.30 × 68,518.02
  4. Step 4: Simplify right side
    125,878.48x = 11,902,422,845.65
  5. Step 5: Solve for x
    x = 11,902,422,845.65/125,878.48
  6. Step 6: Final answer
    x = 94,554.87

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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.