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Finding the Fourth Proportional to 7,874,662.52, 11,812,978.76 and 3,081,732.68

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Solution

The fourth proportional to 7,874,662.52, 11,812,978.76 and 3,081,732.68 is: 4,622,984.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874,662.52 : 11,812,978.76 = 3,081,732.68 : x
  2. Step 2: Convert to fraction form
    7,874,662.52/11,812,978.76 = 3,081,732.68/x
  3. Step 3: Cross multiply
    7,874,662.52x = 11,812,978.76 × 3,081,732.68
  4. Step 4: Simplify right side
    7,874,662.52x = 36,404,442,692,837.88
  5. Step 5: Solve for x
    x = 36,404,442,692,837.88/7,874,662.52
  6. Step 6: Final answer
    x = 4,622,984.49

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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.