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Finding the Fourth Proportional to 8,241,809.80, 12,362,714.70 and 5,372,028.40

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Solution

The fourth proportional to 8,241,809.80, 12,362,714.70 and 5,372,028.40 is: 8,058,042.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,241,809.80 : 12,362,714.70 = 5,372,028.40 : x
  2. Step 2: Convert to fraction form
    8,241,809.80/12,362,714.70 = 5,372,028.40/x
  3. Step 3: Cross multiply
    8,241,809.80x = 12,362,714.70 × 5,372,028.40
  4. Step 4: Simplify right side
    8,241,809.80x = 66,412,854,469,497.48
  5. Step 5: Solve for x
    x = 66,412,854,469,497.48/8,241,809.80
  6. Step 6: Final answer
    x = 8,058,042.60

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Similar ratio
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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.