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Finding the Fourth Proportional to 115,906.40, 173,884.80 and 66,010.40

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Solution

The fourth proportional to 115,906.40, 173,884.80 and 66,010.40 is: 99,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,906.40 : 173,884.80 = 66,010.40 : x
  2. Step 2: Convert to fraction form
    115,906.40/173,884.80 = 66,010.40/x
  3. Step 3: Cross multiply
    115,906.40x = 173,884.80 × 66,010.40
  4. Step 4: Simplify right side
    115,906.40x = 11,478,205,201.92
  5. Step 5: Solve for x
    x = 11,478,205,201.92/115,906.40
  6. Step 6: Final answer
    x = 99,029.95

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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.