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Finding the Fourth Proportional to 6,912,573.70, 10,368,860.55 and 6,520,663.30

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Solution

The fourth proportional to 6,912,573.70, 10,368,860.55 and 6,520,663.30 is: 9,780,994.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912,573.70 : 10,368,860.55 = 6,520,663.30 : x
  2. Step 2: Convert to fraction form
    6,912,573.70/10,368,860.55 = 6,520,663.30/x
  3. Step 3: Cross multiply
    6,912,573.70x = 10,368,860.55 × 6,520,663.30
  4. Step 4: Simplify right side
    6,912,573.70x = 67,611,848,451,202.82
  5. Step 5: Solve for x
    x = 67,611,848,451,202.82/6,912,573.70
  6. Step 6: Final answer
    x = 9,780,994.95

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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.