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Finding the Fourth Proportional to 66,083.67, 99,112.86 and 18,698.31

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Solution

The fourth proportional to 66,083.67, 99,112.86 and 18,698.31 is: 28,043.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,083.67 : 99,112.86 = 18,698.31 : x
  2. Step 2: Convert to fraction form
    66,083.67/99,112.86 = 18,698.31/x
  3. Step 3: Cross multiply
    66,083.67x = 99,112.86 × 18,698.31
  4. Step 4: Simplify right side
    66,083.67x = 1,853,242,981.27
  5. Step 5: Solve for x
    x = 1,853,242,981.27/66,083.67
  6. Step 6: Final answer
    x = 28,043.89

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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.