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Finding the Fourth Proportional to 644,817.55, 888,910.39 and 450,622.34

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Solution

The fourth proportional to 644,817.55, 888,910.39 and 450,622.34 is: 621,203.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,817.55 : 888,910.39 = 450,622.34 : x
  2. Step 2: Convert to fraction form
    644,817.55/888,910.39 = 450,622.34/x
  3. Step 3: Cross multiply
    644,817.55x = 888,910.39 × 450,622.34
  4. Step 4: Simplify right side
    644,817.55x = 400,562,881,909.62
  5. Step 5: Solve for x
    x = 400,562,881,909.62/644,817.55
  6. Step 6: Final answer
    x = 621,203.44

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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.