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Finding the Fourth Proportional to 39,983,963.78, 59,978,188.87 and 11,227,857.12

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Solution

The fourth proportional to 39,983,963.78, 59,978,188.87 and 11,227,857.12 is: 16,842,415.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,983,963.78 : 59,978,188.87 = 11,227,857.12 : x
  2. Step 2: Convert to fraction form
    39,983,963.78/59,978,188.87 = 11,227,857.12/x
  3. Step 3: Cross multiply
    39,983,963.78x = 59,978,188.87 × 11,227,857.12
  4. Step 4: Simplify right side
    39,983,963.78x = 673,426,534,920,664.50
  5. Step 5: Solve for x
    x = 673,426,534,920,664.50/39,983,963.78
  6. Step 6: Final answer
    x = 16,842,415.59

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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.