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Finding the Fourth Proportional to 3,280,603.70, 4,920,905.55 and 3,280,603.70

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Solution

The fourth proportional to 3,280,603.70, 4,920,905.55 and 3,280,603.70 is: 4,920,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280,603.70 : 4,920,905.55 = 3,280,603.70 : x
  2. Step 2: Convert to fraction form
    3,280,603.70/4,920,905.55 = 3,280,603.70/x
  3. Step 3: Cross multiply
    3,280,603.70x = 4,920,905.55 × 3,280,603.70
  4. Step 4: Simplify right side
    3,280,603.70x = 16,143,540,954,680.54
  5. Step 5: Solve for x
    x = 16,143,540,954,680.54/3,280,603.70
  6. Step 6: Final answer
    x = 4,920,905.55

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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.