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Finding the Fourth Proportional to 668,906.75, 923,091.33 and 400,634.75

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Solution

The fourth proportional to 668,906.75, 923,091.33 and 400,634.75 is: 552,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,906.75 : 923,091.33 = 400,634.75 : x
  2. Step 2: Convert to fraction form
    668,906.75/923,091.33 = 400,634.75/x
  3. Step 3: Cross multiply
    668,906.75x = 923,091.33 × 400,634.75
  4. Step 4: Simplify right side
    668,906.75x = 369,822,464,221.72
  5. Step 5: Solve for x
    x = 369,822,464,221.72/668,906.75
  6. Step 6: Final answer
    x = 552,875.96

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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.