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Finding the Fourth Proportional to 93,115.86, 128,496.06 and 50,674.56

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Solution

The fourth proportional to 93,115.86, 128,496.06 and 50,674.56 is: 69,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,115.86 : 128,496.06 = 50,674.56 : x
  2. Step 2: Convert to fraction form
    93,115.86/128,496.06 = 50,674.56/x
  3. Step 3: Cross multiply
    93,115.86x = 128,496.06 × 50,674.56
  4. Step 4: Simplify right side
    93,115.86x = 6,511,481,302.23
  5. Step 5: Solve for x
    x = 6,511,481,302.23/93,115.86
  6. Step 6: Final answer
    x = 69,928.81

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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.