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Finding the Fourth Proportional to 115,789.60, 173,684.40 and 65,850.40

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Solution

The fourth proportional to 115,789.60, 173,684.40 and 65,850.40 is: 98,775.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,789.60 : 173,684.40 = 65,850.40 : x
  2. Step 2: Convert to fraction form
    115,789.60/173,684.40 = 65,850.40/x
  3. Step 3: Cross multiply
    115,789.60x = 173,684.40 × 65,850.40
  4. Step 4: Simplify right side
    115,789.60x = 11,437,187,213.76
  5. Step 5: Solve for x
    x = 11,437,187,213.76/115,789.60
  6. Step 6: Final answer
    x = 98,775.60

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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.