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Finding the Fourth Proportional to 65,939.68, 98,626.93 and 61,153.48

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Solution

The fourth proportional to 65,939.68, 98,626.93 and 61,153.48 is: 91,468.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,939.68 : 98,626.93 = 61,153.48 : x
  2. Step 2: Convert to fraction form
    65,939.68/98,626.93 = 61,153.48/x
  3. Step 3: Cross multiply
    65,939.68x = 98,626.93 × 61,153.48
  4. Step 4: Simplify right side
    65,939.68x = 6,031,379,591.77
  5. Step 5: Solve for x
    x = 6,031,379,591.77/65,939.68
  6. Step 6: Final answer
    x = 91,468.14

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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.