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Finding the Fourth Proportional to 65,360.55, 98,040.78 and 18,613.41

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Solution

The fourth proportional to 65,360.55, 98,040.78 and 18,613.41 is: 27,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,360.55 : 98,040.78 = 18,613.41 : x
  2. Step 2: Convert to fraction form
    65,360.55/98,040.78 = 18,613.41/x
  3. Step 3: Cross multiply
    65,360.55x = 98,040.78 × 18,613.41
  4. Step 4: Simplify right side
    65,360.55x = 1,824,873,234.86
  5. Step 5: Solve for x
    x = 1,824,873,234.86/65,360.55
  6. Step 6: Final answer
    x = 27,920.10

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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.