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Finding the Fourth Proportional to 6,709,796.70, 10,064,695.05 and 1,661,107.20

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Solution

The fourth proportional to 6,709,796.70, 10,064,695.05 and 1,661,107.20 is: 2,491,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,709,796.70 : 10,064,695.05 = 1,661,107.20 : x
  2. Step 2: Convert to fraction form
    6,709,796.70/10,064,695.05 = 1,661,107.20/x
  3. Step 3: Cross multiply
    6,709,796.70x = 10,064,695.05 × 1,661,107.20
  4. Step 4: Simplify right side
    6,709,796.70x = 16,718,537,413,359.36
  5. Step 5: Solve for x
    x = 16,718,537,413,359.36/6,709,796.70
  6. Step 6: Final answer
    x = 2,491,660.80

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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.