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Finding the Fourth Proportional to 68,909.92, 103,363.66 and 39,264.52

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Solution

The fourth proportional to 68,909.92, 103,363.66 and 39,264.52 is: 58,896.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,909.92 : 103,363.66 = 39,264.52 : x
  2. Step 2: Convert to fraction form
    68,909.92/103,363.66 = 39,264.52/x
  3. Step 3: Cross multiply
    68,909.92x = 103,363.66 × 39,264.52
  4. Step 4: Simplify right side
    68,909.92x = 4,058,524,495.34
  5. Step 5: Solve for x
    x = 4,058,524,495.34/68,909.92
  6. Step 6: Final answer
    x = 58,896.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.