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Finding the Fourth Proportional to 85,353.94, 117,788.34 and 49,545.46

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Solution

The fourth proportional to 85,353.94, 117,788.34 and 49,545.46 is: 68,372.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,353.94 : 117,788.34 = 49,545.46 : x
  2. Step 2: Convert to fraction form
    85,353.94/117,788.34 = 49,545.46/x
  3. Step 3: Cross multiply
    85,353.94x = 117,788.34 × 49,545.46
  4. Step 4: Simplify right side
    85,353.94x = 5,835,877,487.94
  5. Step 5: Solve for x
    x = 5,835,877,487.94/85,353.94
  6. Step 6: Final answer
    x = 68,372.68

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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.