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Finding the Fourth Proportional to 7,940.52, 10,953.90 and 4,958.64

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Solution

The fourth proportional to 7,940.52, 10,953.90 and 4,958.64 is: 6,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.52 : 10,953.90 = 4,958.64 : x
  2. Step 2: Convert to fraction form
    7,940.52/10,953.90 = 4,958.64/x
  3. Step 3: Cross multiply
    7,940.52x = 10,953.90 × 4,958.64
  4. Step 4: Simplify right side
    7,940.52x = 54,316,446.70
  5. Step 5: Solve for x
    x = 54,316,446.70/7,940.52
  6. Step 6: Final answer
    x = 6,840.41

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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.