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Finding the Fourth Proportional to 104,671.88, 144,385.70 and 65,847.97

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Solution

The fourth proportional to 104,671.88, 144,385.70 and 65,847.97 is: 90,831.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,671.88 : 144,385.70 = 65,847.97 : x
  2. Step 2: Convert to fraction form
    104,671.88/144,385.70 = 65,847.97/x
  3. Step 3: Cross multiply
    104,671.88x = 144,385.70 × 65,847.97
  4. Step 4: Simplify right side
    104,671.88x = 9,507,504,774.96
  5. Step 5: Solve for x
    x = 9,507,504,774.96/104,671.88
  6. Step 6: Final answer
    x = 90,831.51

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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.