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Finding the Fourth Proportional to 68,582.92, 94,663.44 and 39,908.10

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Solution

The fourth proportional to 68,582.92, 94,663.44 and 39,908.10 is: 55,084.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,582.92 : 94,663.44 = 39,908.10 : x
  2. Step 2: Convert to fraction form
    68,582.92/94,663.44 = 39,908.10/x
  3. Step 3: Cross multiply
    68,582.92x = 94,663.44 × 39,908.10
  4. Step 4: Simplify right side
    68,582.92x = 3,777,838,029.86
  5. Step 5: Solve for x
    x = 3,777,838,029.86/68,582.92
  6. Step 6: Final answer
    x = 55,084.24

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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.