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Finding the Fourth Proportional to 65,898.97, 90,936.98 and 39,043.96

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Solution

The fourth proportional to 65,898.97, 90,936.98 and 39,043.96 is: 53,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,898.97 : 90,936.98 = 39,043.96 : x
  2. Step 2: Convert to fraction form
    65,898.97/90,936.98 = 39,043.96/x
  3. Step 3: Cross multiply
    65,898.97x = 90,936.98 × 39,043.96
  4. Step 4: Simplify right side
    65,898.97x = 3,550,539,809.64
  5. Step 5: Solve for x
    x = 3,550,539,809.64/65,898.97
  6. Step 6: Final answer
    x = 53,878.53

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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.