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Finding the Fourth Proportional to 61,016.80, 91,525.20 and 36,068.80

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Solution

The fourth proportional to 61,016.80, 91,525.20 and 36,068.80 is: 54,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,016.80 : 91,525.20 = 36,068.80 : x
  2. Step 2: Convert to fraction form
    61,016.80/91,525.20 = 36,068.80/x
  3. Step 3: Cross multiply
    61,016.80x = 91,525.20 × 36,068.80
  4. Step 4: Simplify right side
    61,016.80x = 3,301,204,133.76
  5. Step 5: Solve for x
    x = 3,301,204,133.76/61,016.80
  6. Step 6: Final answer
    x = 54,103.20

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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.