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Finding the Fourth Proportional to 40,780.50, 61,187.08 and 18,604.32

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Solution

The fourth proportional to 40,780.50, 61,187.08 and 18,604.32 is: 27,913.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,780.50 : 61,187.08 = 18,604.32 : x
  2. Step 2: Convert to fraction form
    40,780.50/61,187.08 = 18,604.32/x
  3. Step 3: Cross multiply
    40,780.50x = 61,187.08 × 18,604.32
  4. Step 4: Simplify right side
    40,780.50x = 1,138,344,016.19
  5. Step 5: Solve for x
    x = 1,138,344,016.19/40,780.50
  6. Step 6: Final answer
    x = 27,913.93

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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.