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Finding the Fourth Proportional to 61,208.60, 91,812.90 and 26,216.60

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Solution

The fourth proportional to 61,208.60, 91,812.90 and 26,216.60 is: 39,324.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,208.60 : 91,812.90 = 26,216.60 : x
  2. Step 2: Convert to fraction form
    61,208.60/91,812.90 = 26,216.60/x
  3. Step 3: Cross multiply
    61,208.60x = 91,812.90 × 26,216.60
  4. Step 4: Simplify right side
    61,208.60x = 2,407,022,074.14
  5. Step 5: Solve for x
    x = 2,407,022,074.14/61,208.60
  6. Step 6: Final answer
    x = 39,324.90

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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.