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Finding the Fourth Proportional to 69,991.77, 96,590.58 and 42,772.26

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Solution

The fourth proportional to 69,991.77, 96,590.58 and 42,772.26 is: 59,026.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,991.77 : 96,590.58 = 42,772.26 : x
  2. Step 2: Convert to fraction form
    69,991.77/96,590.58 = 42,772.26/x
  3. Step 3: Cross multiply
    69,991.77x = 96,590.58 × 42,772.26
  4. Step 4: Simplify right side
    69,991.77x = 4,131,397,401.31
  5. Step 5: Solve for x
    x = 4,131,397,401.31/69,991.77
  6. Step 6: Final answer
    x = 59,026.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.