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Finding the Fourth Proportional to 99,086.70, 136,853.22 and 65,246.48

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Solution

The fourth proportional to 99,086.70, 136,853.22 and 65,246.48 is: 90,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,086.70 : 136,853.22 = 65,246.48 : x
  2. Step 2: Convert to fraction form
    99,086.70/136,853.22 = 65,246.48/x
  3. Step 3: Cross multiply
    99,086.70x = 136,853.22 × 65,246.48
  4. Step 4: Simplify right side
    99,086.70x = 8,929,190,881.67
  5. Step 5: Solve for x
    x = 8,929,190,881.67/99,086.70
  6. Step 6: Final answer
    x = 90,114.93

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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.