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Finding the Fourth Proportional to 33,459.70, 50,155.80 and 12,386.20

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Solution

The fourth proportional to 33,459.70, 50,155.80 and 12,386.20 is: 18,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,459.70 : 50,155.80 = 12,386.20 : x
  2. Step 2: Convert to fraction form
    33,459.70/50,155.80 = 12,386.20/x
  3. Step 3: Cross multiply
    33,459.70x = 50,155.80 × 12,386.20
  4. Step 4: Simplify right side
    33,459.70x = 621,239,769.96
  5. Step 5: Solve for x
    x = 621,239,769.96/33,459.70
  6. Step 6: Final answer
    x = 18,566.81

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.