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Finding the Fourth Proportional to 644,672.36, 888,930.42 and 440,756.36

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Solution

The fourth proportional to 644,672.36, 888,930.42 and 440,756.36 is: 607,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,672.36 : 888,930.42 = 440,756.36 : x
  2. Step 2: Convert to fraction form
    644,672.36/888,930.42 = 440,756.36/x
  3. Step 3: Cross multiply
    644,672.36x = 888,930.42 × 440,756.36
  4. Step 4: Simplify right side
    644,672.36x = 391,801,736,212.47
  5. Step 5: Solve for x
    x = 391,801,736,212.47/644,672.36
  6. Step 6: Final answer
    x = 607,753.27

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1.5x scale

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.