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Finding the Fourth Proportional to 65,878.92, 90,913.20 and 35,664.27

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Solution

The fourth proportional to 65,878.92, 90,913.20 and 35,664.27 is: 49,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,878.92 : 90,913.20 = 35,664.27 : x
  2. Step 2: Convert to fraction form
    65,878.92/90,913.20 = 35,664.27/x
  3. Step 3: Cross multiply
    65,878.92x = 90,913.20 × 35,664.27
  4. Step 4: Simplify right side
    65,878.92x = 3,242,352,911.36
  5. Step 5: Solve for x
    x = 3,242,352,911.36/65,878.92
  6. Step 6: Final answer
    x = 49,216.85

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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.