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Finding the Fourth Proportional to 70,015.66, 96,617.79 and 39,796.80

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Solution

The fourth proportional to 70,015.66, 96,617.79 and 39,796.80 is: 54,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,015.66 : 96,617.79 = 39,796.80 : x
  2. Step 2: Convert to fraction form
    70,015.66/96,617.79 = 39,796.80/x
  3. Step 3: Cross multiply
    70,015.66x = 96,617.79 × 39,796.80
  4. Step 4: Simplify right side
    70,015.66x = 3,845,078,865.07
  5. Step 5: Solve for x
    x = 3,845,078,865.07/70,015.66
  6. Step 6: Final answer
    x = 54,917.41

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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.