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Finding the Fourth Proportional to 96,990.36, 133,845.60 and 53,969.64

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Solution

The fourth proportional to 96,990.36, 133,845.60 and 53,969.64 is: 74,477.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,990.36 : 133,845.60 = 53,969.64 : x
  2. Step 2: Convert to fraction form
    96,990.36/133,845.60 = 53,969.64/x
  3. Step 3: Cross multiply
    96,990.36x = 133,845.60 × 53,969.64
  4. Step 4: Simplify right side
    96,990.36x = 7,223,598,847.58
  5. Step 5: Solve for x
    x = 7,223,598,847.58/96,990.36
  6. Step 6: Final answer
    x = 74,477.49

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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.