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Finding the Fourth Proportional to 11,203,678.45, 16,805,517.68 and 11,203,678.45

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Solution

The fourth proportional to 11,203,678.45, 16,805,517.68 and 11,203,678.45 is: 16,805,517.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,203,678.45 : 16,805,517.68 = 11,203,678.45 : x
  2. Step 2: Convert to fraction form
    11,203,678.45/16,805,517.68 = 11,203,678.45/x
  3. Step 3: Cross multiply
    11,203,678.45x = 16,805,517.68 × 11,203,678.45
  4. Step 4: Simplify right side
    11,203,678.45x = 188,283,616,272,509.97
  5. Step 5: Solve for x
    x = 188,283,616,272,509.97/11,203,678.45
  6. Step 6: Final answer
    x = 16,805,517.68

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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.