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Finding the Fourth Proportional to 7,226,725.84, 9,972,930.90 and 3,963,563.88

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Solution

The fourth proportional to 7,226,725.84, 9,972,930.90 and 3,963,563.88 is: 5,469,745.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,226,725.84 : 9,972,930.90 = 3,963,563.88 : x
  2. Step 2: Convert to fraction form
    7,226,725.84/9,972,930.90 = 3,963,563.88/x
  3. Step 3: Cross multiply
    7,226,725.84x = 9,972,930.90 × 3,963,563.88
  4. Step 4: Simplify right side
    7,226,725.84x = 39,528,348,692,975.89
  5. Step 5: Solve for x
    x = 39,528,348,692,975.89/7,226,725.84
  6. Step 6: Final answer
    x = 5,469,745.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.