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Finding the Fourth Proportional to 116,863.50, 161,268.21 and 65,879.22

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Solution

The fourth proportional to 116,863.50, 161,268.21 and 65,879.22 is: 90,911.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,863.50 : 161,268.21 = 65,879.22 : x
  2. Step 2: Convert to fraction form
    116,863.50/161,268.21 = 65,879.22/x
  3. Step 3: Cross multiply
    116,863.50x = 161,268.21 × 65,879.22
  4. Step 4: Simplify right side
    116,863.50x = 10,624,223,885.60
  5. Step 5: Solve for x
    x = 10,624,223,885.60/116,863.50
  6. Step 6: Final answer
    x = 90,911.40

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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.