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Finding the Fourth Proportional to 170,716.99, 256,087.90 and 65,535.96

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Solution

The fourth proportional to 170,716.99, 256,087.90 and 65,535.96 is: 98,308.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,716.99 : 256,087.90 = 65,535.96 : x
  2. Step 2: Convert to fraction form
    170,716.99/256,087.90 = 65,535.96/x
  3. Step 3: Cross multiply
    170,716.99x = 256,087.90 × 65,535.96
  4. Step 4: Simplify right side
    170,716.99x = 16,782,966,877.21
  5. Step 5: Solve for x
    x = 16,782,966,877.21/170,716.99
  6. Step 6: Final answer
    x = 98,308.71

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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.