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Finding the Fourth Proportional to 1,408,984.25, 1,944,401.95 and 764,404.44

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Solution

The fourth proportional to 1,408,984.25, 1,944,401.95 and 764,404.44 is: 1,054,880.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,984.25 : 1,944,401.95 = 764,404.44 : x
  2. Step 2: Convert to fraction form
    1,408,984.25/1,944,401.95 = 764,404.44/x
  3. Step 3: Cross multiply
    1,408,984.25x = 1,944,401.95 × 764,404.44
  4. Step 4: Simplify right side
    1,408,984.25x = 1,486,309,483,724.66
  5. Step 5: Solve for x
    x = 1,486,309,483,724.66/1,408,984.25
  6. Step 6: Final answer
    x = 1,054,880.13

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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.