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Finding the Fourth Proportional to 61,362.40, 91,813.20 and 55,832.80

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Solution

The fourth proportional to 61,362.40, 91,813.20 and 55,832.80 is: 83,539.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,362.40 : 91,813.20 = 55,832.80 : x
  2. Step 2: Convert to fraction form
    61,362.40/91,813.20 = 55,832.80/x
  3. Step 3: Cross multiply
    61,362.40x = 91,813.20 × 55,832.80
  4. Step 4: Simplify right side
    61,362.40x = 5,126,188,032.96
  5. Step 5: Solve for x
    x = 5,126,188,032.96/61,362.40
  6. Step 6: Final answer
    x = 83,539.56

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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.