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Finding the Fourth Proportional to 5,009.04, 6,912 and 2,912.76

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Solution

The fourth proportional to 5,009.04, 6,912 and 2,912.76 is: 4,019.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.04 : 6,912 = 2,912.76 : x
  2. Step 2: Convert to fraction form
    5,009.04/6,912 = 2,912.76/x
  3. Step 3: Cross multiply
    5,009.04x = 6,912 × 2,912.76
  4. Step 4: Simplify right side
    5,009.04x = 20,132,997.12
  5. Step 5: Solve for x
    x = 20,132,997.12/5,009.04
  6. Step 6: Final answer
    x = 4,019.33

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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.