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Finding the Fourth Proportional to 43,313.69, 64,974.74 and 18,007.94

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Solution

The fourth proportional to 43,313.69, 64,974.74 and 18,007.94 is: 27,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,313.69 : 64,974.74 = 18,007.94 : x
  2. Step 2: Convert to fraction form
    43,313.69/64,974.74 = 18,007.94/x
  3. Step 3: Cross multiply
    43,313.69x = 64,974.74 × 18,007.94
  4. Step 4: Simplify right side
    43,313.69x = 1,170,060,804.52
  5. Step 5: Solve for x
    x = 1,170,060,804.52/43,313.69
  6. Step 6: Final answer
    x = 27,013.65

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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.