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Finding the Fourth Proportional to 6,640,657.70, 9,960,986.55 and 3,274,427.30

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Solution

The fourth proportional to 6,640,657.70, 9,960,986.55 and 3,274,427.30 is: 4,911,640.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640,657.70 : 9,960,986.55 = 3,274,427.30 : x
  2. Step 2: Convert to fraction form
    6,640,657.70/9,960,986.55 = 3,274,427.30/x
  3. Step 3: Cross multiply
    6,640,657.70x = 9,960,986.55 × 3,274,427.30
  4. Step 4: Simplify right side
    6,640,657.70x = 32,616,526,294,252.82
  5. Step 5: Solve for x
    x = 32,616,526,294,252.82/6,640,657.70
  6. Step 6: Final answer
    x = 4,911,640.95

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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.