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Finding the Fourth Proportional to 6,474,809.40, 9,714,935.70 and 3,479,494.20

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Solution

The fourth proportional to 6,474,809.40, 9,714,935.70 and 3,479,494.20 is: 5,220,703.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,474,809.40 : 9,714,935.70 = 3,479,494.20 : x
  2. Step 2: Convert to fraction form
    6,474,809.40/9,714,935.70 = 3,479,494.20/x
  3. Step 3: Cross multiply
    6,474,809.40x = 9,714,935.70 × 3,479,494.20
  4. Step 4: Simplify right side
    6,474,809.40x = 33,803,062,421,522.94
  5. Step 5: Solve for x
    x = 33,803,062,421,522.94/6,474,809.40
  6. Step 6: Final answer
    x = 5,220,703.86

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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.