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Finding the Fourth Proportional to 7,789,617.10, 11,684,425.65 and 7,789,617.10

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Solution

The fourth proportional to 7,789,617.10, 11,684,425.65 and 7,789,617.10 is: 11,684,425.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789,617.10 : 11,684,425.65 = 7,789,617.10 : x
  2. Step 2: Convert to fraction form
    7,789,617.10/11,684,425.65 = 7,789,617.10/x
  3. Step 3: Cross multiply
    7,789,617.10x = 11,684,425.65 × 7,789,617.10
  4. Step 4: Simplify right side
    7,789,617.10x = 91,017,201,846,918.61
  5. Step 5: Solve for x
    x = 91,017,201,846,918.61/7,789,617.10
  6. Step 6: Final answer
    x = 11,684,425.65

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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.