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Finding the Fourth Proportional to 99,046.98, 136,763.34 and 91,490.49

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Solution

The fourth proportional to 99,046.98, 136,763.34 and 91,490.49 is: 126,329.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,046.98 : 136,763.34 = 91,490.49 : x
  2. Step 2: Convert to fraction form
    99,046.98/136,763.34 = 91,490.49/x
  3. Step 3: Cross multiply
    99,046.98x = 136,763.34 × 91,490.49
  4. Step 4: Simplify right side
    99,046.98x = 12,512,544,990.64
  5. Step 5: Solve for x
    x = 12,512,544,990.64/99,046.98
  6. Step 6: Final answer
    x = 126,329.39

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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.