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Finding the Fourth Proportional to 7,920.54, 10,936.08 and 5,273.46

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Solution

The fourth proportional to 7,920.54, 10,936.08 and 5,273.46 is: 7,281.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.54 : 10,936.08 = 5,273.46 : x
  2. Step 2: Convert to fraction form
    7,920.54/10,936.08 = 5,273.46/x
  3. Step 3: Cross multiply
    7,920.54x = 10,936.08 × 5,273.46
  4. Step 4: Simplify right side
    7,920.54x = 57,670,980.44
  5. Step 5: Solve for x
    x = 57,670,980.44/7,920.54
  6. Step 6: Final answer
    x = 7,281.19

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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.