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Finding the Fourth Proportional to 73,881.36, 110,821.32 and 18,477.36

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Solution

The fourth proportional to 73,881.36, 110,821.32 and 18,477.36 is: 27,715.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,881.36 : 110,821.32 = 18,477.36 : x
  2. Step 2: Convert to fraction form
    73,881.36/110,821.32 = 18,477.36/x
  3. Step 3: Cross multiply
    73,881.36x = 110,821.32 × 18,477.36
  4. Step 4: Simplify right side
    73,881.36x = 2,047,685,425.32
  5. Step 5: Solve for x
    x = 2,047,685,425.32/73,881.36
  6. Step 6: Final answer
    x = 27,715.86

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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.