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Finding the Fourth Proportional to 56,866.38, 78,489.99 and 32,990.01

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Solution

The fourth proportional to 56,866.38, 78,489.99 and 32,990.01 is: 45,534.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,866.38 : 78,489.99 = 32,990.01 : x
  2. Step 2: Convert to fraction form
    56,866.38/78,489.99 = 32,990.01/x
  3. Step 3: Cross multiply
    56,866.38x = 78,489.99 × 32,990.01
  4. Step 4: Simplify right side
    56,866.38x = 2,589,385,555.00
  5. Step 5: Solve for x
    x = 2,589,385,555.00/56,866.38
  6. Step 6: Final answer
    x = 45,534.56

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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.