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Finding the Fourth Proportional to 40,804.92, 61,216.83 and 12,723.48

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Solution

The fourth proportional to 40,804.92, 61,216.83 and 12,723.48 is: 19,088.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,804.92 : 61,216.83 = 12,723.48 : x
  2. Step 2: Convert to fraction form
    40,804.92/61,216.83 = 12,723.48/x
  3. Step 3: Cross multiply
    40,804.92x = 61,216.83 × 12,723.48
  4. Step 4: Simplify right side
    40,804.92x = 778,891,112.17
  5. Step 5: Solve for x
    x = 778,891,112.17/40,804.92
  6. Step 6: Final answer
    x = 19,088.17

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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.