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Finding the Fourth Proportional to 1,408,015.84, 1,942,941.72 and 796,138.60

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Solution

The fourth proportional to 1,408,015.84, 1,942,941.72 and 796,138.60 is: 1,098,603.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,015.84 : 1,942,941.72 = 796,138.60 : x
  2. Step 2: Convert to fraction form
    1,408,015.84/1,942,941.72 = 796,138.60/x
  3. Step 3: Cross multiply
    1,408,015.84x = 1,942,941.72 × 796,138.60
  4. Step 4: Simplify right side
    1,408,015.84x = 1,546,850,900,842.39
  5. Step 5: Solve for x
    x = 1,546,850,900,842.39/1,408,015.84
  6. Step 6: Final answer
    x = 1,098,603.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.