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Finding the Fourth Proportional to 99,104.85, 136,674.27 and 65,099.70

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Solution

The fourth proportional to 99,104.85, 136,674.27 and 65,099.70 is: 89,778.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,104.85 : 136,674.27 = 65,099.70 : x
  2. Step 2: Convert to fraction form
    99,104.85/136,674.27 = 65,099.70/x
  3. Step 3: Cross multiply
    99,104.85x = 136,674.27 × 65,099.70
  4. Step 4: Simplify right side
    99,104.85x = 8,897,453,974.72
  5. Step 5: Solve for x
    x = 8,897,453,974.72/99,104.85
  6. Step 6: Final answer
    x = 89,778.19

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1.5x scale

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.