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Finding the Fourth Proportional to 6,474,912.40, 9,078,148.40 and 6,474,912.40

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Solution

The fourth proportional to 6,474,912.40, 9,078,148.40 and 6,474,912.40 is: 9,078,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,474,912.40 : 9,078,148.40 = 6,474,912.40 : x
  2. Step 2: Convert to fraction form
    6,474,912.40/9,078,148.40 = 6,474,912.40/x
  3. Step 3: Cross multiply
    6,474,912.40x = 9,078,148.40 × 6,474,912.40
  4. Step 4: Simplify right side
    6,474,912.40x = 58,780,215,644,200.16
  5. Step 5: Solve for x
    x = 58,780,215,644,200.16/6,474,912.40
  6. Step 6: Final answer
    x = 9,078,148.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.