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Finding the Fourth Proportional to 93,103.25, 128,481.40 and 50,661.05

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Solution

The fourth proportional to 93,103.25, 128,481.40 and 50,661.05 is: 69,911.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,103.25 : 128,481.40 = 50,661.05 : x
  2. Step 2: Convert to fraction form
    93,103.25/128,481.40 = 50,661.05/x
  3. Step 3: Cross multiply
    93,103.25x = 128,481.40 × 50,661.05
  4. Step 4: Simplify right side
    93,103.25x = 6,509,002,629.47
  5. Step 5: Solve for x
    x = 6,509,002,629.47/93,103.25
  6. Step 6: Final answer
    x = 69,911.66

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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.