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Finding the Fourth Proportional to 65,896.74, 98,885.70 and 25,908.68

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Solution

The fourth proportional to 65,896.74, 98,885.70 and 25,908.68 is: 38,878.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,896.74 : 98,885.70 = 25,908.68 : x
  2. Step 2: Convert to fraction form
    65,896.74/98,885.70 = 25,908.68/x
  3. Step 3: Cross multiply
    65,896.74x = 98,885.70 × 25,908.68
  4. Step 4: Simplify right side
    65,896.74x = 2,561,997,957.88
  5. Step 5: Solve for x
    x = 2,561,997,957.88/65,896.74
  6. Step 6: Final answer
    x = 38,878.98

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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.