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Finding the Fourth Proportional to 65,617.83, 98,406.09 and 21,234.29

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Solution

The fourth proportional to 65,617.83, 98,406.09 and 21,234.29 is: 31,844.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,617.83 : 98,406.09 = 21,234.29 : x
  2. Step 2: Convert to fraction form
    65,617.83/98,406.09 = 21,234.29/x
  3. Step 3: Cross multiply
    65,617.83x = 98,406.09 × 21,234.29
  4. Step 4: Simplify right side
    65,617.83x = 2,089,582,960.80
  5. Step 5: Solve for x
    x = 2,089,582,960.80/65,617.83
  6. Step 6: Final answer
    x = 31,844.74

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1.5x scale

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.