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Finding the Fourth Proportional to 86,906.70, 122,019.30 and 86,906.70

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Solution

The fourth proportional to 86,906.70, 122,019.30 and 86,906.70 is: 122,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,906.70 : 122,019.30 = 86,906.70 : x
  2. Step 2: Convert to fraction form
    86,906.70/122,019.30 = 86,906.70/x
  3. Step 3: Cross multiply
    86,906.70x = 122,019.30 × 86,906.70
  4. Step 4: Simplify right side
    86,906.70x = 10,604,294,699.31
  5. Step 5: Solve for x
    x = 10,604,294,699.31/86,906.70
  6. Step 6: Final answer
    x = 122,019.30

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.