Home / 51,185.18-76,777.77-19,998.56

Finding the Fourth Proportional to 51,185.18, 76,777.77 and 19,998.56

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Solution

The fourth proportional to 51,185.18, 76,777.77 and 19,998.56 is: 29,997.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,185.18 : 76,777.77 = 19,998.56 : x
  2. Step 2: Convert to fraction form
    51,185.18/76,777.77 = 19,998.56/x
  3. Step 3: Cross multiply
    51,185.18x = 76,777.77 × 19,998.56
  4. Step 4: Simplify right side
    51,185.18x = 1,535,445,106.95
  5. Step 5: Solve for x
    x = 1,535,445,106.95/51,185.18
  6. Step 6: Final answer
    x = 29,997.84

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Double scale
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Similar ratio
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1.5x scale

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.