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Finding the Fourth Proportional to 6,912,054.70, 10,368,082.05 and 6,439,662.70

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Solution

The fourth proportional to 6,912,054.70, 10,368,082.05 and 6,439,662.70 is: 9,659,494.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912,054.70 : 10,368,082.05 = 6,439,662.70 : x
  2. Step 2: Convert to fraction form
    6,912,054.70/10,368,082.05 = 6,439,662.70/x
  3. Step 3: Cross multiply
    6,912,054.70x = 10,368,082.05 × 6,439,662.70
  4. Step 4: Simplify right side
    6,912,054.70x = 66,766,951,247,924.54
  5. Step 5: Solve for x
    x = 66,766,951,247,924.54/6,912,054.70
  6. Step 6: Final answer
    x = 9,659,494.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.