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Finding the Fourth Proportional to 669,509.39, 923,920.11 and 363,583.64

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Solution

The fourth proportional to 669,509.39, 923,920.11 and 363,583.64 is: 501,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,509.39 : 923,920.11 = 363,583.64 : x
  2. Step 2: Convert to fraction form
    669,509.39/923,920.11 = 363,583.64/x
  3. Step 3: Cross multiply
    669,509.39x = 923,920.11 × 363,583.64
  4. Step 4: Simplify right side
    669,509.39x = 335,922,236,663.00
  5. Step 5: Solve for x
    x = 335,922,236,663.00/669,509.39
  6. Step 6: Final answer
    x = 501,743.88

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Double scale
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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.