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Finding the Fourth Proportional to 71,608.50, 98,846.19 and 61,496.19

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Solution

The fourth proportional to 71,608.50, 98,846.19 and 61,496.19 is: 84,887.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,608.50 : 98,846.19 = 61,496.19 : x
  2. Step 2: Convert to fraction form
    71,608.50/98,846.19 = 61,496.19/x
  3. Step 3: Cross multiply
    71,608.50x = 98,846.19 × 61,496.19
  4. Step 4: Simplify right side
    71,608.50x = 6,078,664,081.02
  5. Step 5: Solve for x
    x = 6,078,664,081.02/71,608.50
  6. Step 6: Final answer
    x = 84,887.47

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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.