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Finding the Fourth Proportional to 99,963.35, 137,952.61 and 54,640.34

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Solution

The fourth proportional to 99,963.35, 137,952.61 and 54,640.34 is: 75,405.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,963.35 : 137,952.61 = 54,640.34 : x
  2. Step 2: Convert to fraction form
    99,963.35/137,952.61 = 54,640.34/x
  3. Step 3: Cross multiply
    99,963.35x = 137,952.61 × 54,640.34
  4. Step 4: Simplify right side
    99,963.35x = 7,537,777,514.29
  5. Step 5: Solve for x
    x = 7,537,777,514.29/99,963.35
  6. Step 6: Final answer
    x = 75,405.41

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