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Finding the Fourth Proportional to 7,940.64, 10,957.94 and 4,403.84

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Solution

The fourth proportional to 7,940.64, 10,957.94 and 4,403.84 is: 6,077.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.64 : 10,957.94 = 4,403.84 : x
  2. Step 2: Convert to fraction form
    7,940.64/10,957.94 = 4,403.84/x
  3. Step 3: Cross multiply
    7,940.64x = 10,957.94 × 4,403.84
  4. Step 4: Simplify right side
    7,940.64x = 48,257,014.49
  5. Step 5: Solve for x
    x = 48,257,014.49/7,940.64
  6. Step 6: Final answer
    x = 6,077.22

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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.