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Finding the Fourth Proportional to 42,648,716.22, 63,972,996.57 and 13,894,817.82

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Solution

The fourth proportional to 42,648,716.22, 63,972,996.57 and 13,894,817.82 is: 20,842,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,648,716.22 : 63,972,996.57 = 13,894,817.82 : x
  2. Step 2: Convert to fraction form
    42,648,716.22/63,972,996.57 = 13,894,817.82/x
  3. Step 3: Cross multiply
    42,648,716.22x = 63,972,996.57 × 13,894,817.82
  4. Step 4: Simplify right side
    42,648,716.22x = 888,893,132,739,634.88
  5. Step 5: Solve for x
    x = 888,893,132,739,634.88/42,648,716.22
  6. Step 6: Final answer
    x = 20,842,201.40

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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.