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Finding the Fourth Proportional to 685,906.11, 946,550.16 and 380,002.32

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Solution

The fourth proportional to 685,906.11, 946,550.16 and 380,002.32 is: 524,403.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,906.11 : 946,550.16 = 380,002.32 : x
  2. Step 2: Convert to fraction form
    685,906.11/946,550.16 = 380,002.32/x
  3. Step 3: Cross multiply
    685,906.11x = 946,550.16 × 380,002.32
  4. Step 4: Simplify right side
    685,906.11x = 359,691,256,796.37
  5. Step 5: Solve for x
    x = 359,691,256,796.37/685,906.11
  6. Step 6: Final answer
    x = 524,403.05

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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.