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Finding the Fourth Proportional to 61,012.69, 91,508.70 and 16,629.05

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Solution

The fourth proportional to 61,012.69, 91,508.70 and 16,629.05 is: 24,940.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,012.69 : 91,508.70 = 16,629.05 : x
  2. Step 2: Convert to fraction form
    61,012.69/91,508.70 = 16,629.05/x
  3. Step 3: Cross multiply
    61,012.69x = 91,508.70 × 16,629.05
  4. Step 4: Simplify right side
    61,012.69x = 1,521,702,290.19
  5. Step 5: Solve for x
    x = 1,521,702,290.19/61,012.69
  6. Step 6: Final answer
    x = 24,940.75

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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.