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Finding the Fourth Proportional to 669,504.39, 923,913.21 and 363,578.63

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Solution

The fourth proportional to 669,504.39, 923,913.21 and 363,578.63 is: 501,736.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,504.39 : 923,913.21 = 363,578.63 : x
  2. Step 2: Convert to fraction form
    669,504.39/923,913.21 = 363,578.63/x
  3. Step 3: Cross multiply
    669,504.39x = 923,913.21 × 363,578.63
  4. Step 4: Simplify right side
    669,504.39x = 335,915,099,130.70
  5. Step 5: Solve for x
    x = 335,915,099,130.70/669,504.39
  6. Step 6: Final answer
    x = 501,736.96

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Half scale
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Double scale
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Similar ratio
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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.