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Finding the Fourth Proportional to 104,954.60, 157,431.90 and 84,218.60

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Solution

The fourth proportional to 104,954.60, 157,431.90 and 84,218.60 is: 126,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,954.60 : 157,431.90 = 84,218.60 : x
  2. Step 2: Convert to fraction form
    104,954.60/157,431.90 = 84,218.60/x
  3. Step 3: Cross multiply
    104,954.60x = 157,431.90 × 84,218.60
  4. Step 4: Simplify right side
    104,954.60x = 13,258,694,213.34
  5. Step 5: Solve for x
    x = 13,258,694,213.34/104,954.60
  6. Step 6: Final answer
    x = 126,327.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.