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Finding the Fourth Proportional to 100,605.66, 150,873.93 and 38,293.98

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Solution

The fourth proportional to 100,605.66, 150,873.93 and 38,293.98 is: 57,427.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,605.66 : 150,873.93 = 38,293.98 : x
  2. Step 2: Convert to fraction form
    100,605.66/150,873.93 = 38,293.98/x
  3. Step 3: Cross multiply
    100,605.66x = 150,873.93 × 38,293.98
  4. Step 4: Simplify right side
    100,605.66x = 5,777,563,257.94
  5. Step 5: Solve for x
    x = 5,777,563,257.94/100,605.66
  6. Step 6: Final answer
    x = 57,427.82

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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.