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Finding the Fourth Proportional to 99,084.70, 136,850.46 and 65,244.47

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Solution

The fourth proportional to 99,084.70, 136,850.46 and 65,244.47 is: 90,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,084.70 : 136,850.46 = 65,244.47 : x
  2. Step 2: Convert to fraction form
    99,084.70/136,850.46 = 65,244.47/x
  3. Step 3: Cross multiply
    99,084.70x = 136,850.46 × 65,244.47
  4. Step 4: Simplify right side
    99,084.70x = 8,928,735,939.82
  5. Step 5: Solve for x
    x = 8,928,735,939.82/99,084.70
  6. Step 6: Final answer
    x = 90,112.15

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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.