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Finding the Fourth Proportional to 85,906.64, 128,863.80 and 23,577.68

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Solution

The fourth proportional to 85,906.64, 128,863.80 and 23,577.68 is: 35,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,906.64 : 128,863.80 = 23,577.68 : x
  2. Step 2: Convert to fraction form
    85,906.64/128,863.80 = 23,577.68/x
  3. Step 3: Cross multiply
    85,906.64x = 128,863.80 × 23,577.68
  4. Step 4: Simplify right side
    85,906.64x = 3,038,309,439.98
  5. Step 5: Solve for x
    x = 3,038,309,439.98/85,906.64
  6. Step 6: Final answer
    x = 35,367.57

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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.