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Finding the Fourth Proportional to 691,894.14, 954,792.25 and 405,604.90

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Solution

The fourth proportional to 691,894.14, 954,792.25 and 405,604.90 is: 559,722.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,894.14 : 954,792.25 = 405,604.90 : x
  2. Step 2: Convert to fraction form
    691,894.14/954,792.25 = 405,604.90/x
  3. Step 3: Cross multiply
    691,894.14x = 954,792.25 × 405,604.90
  4. Step 4: Simplify right side
    691,894.14x = 387,268,415,082.03
  5. Step 5: Solve for x
    x = 387,268,415,082.03/691,894.14
  6. Step 6: Final answer
    x = 559,722.06

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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.