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Finding the Fourth Proportional to 404,524.85, 560,604.06 and 398,816.78

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Solution

The fourth proportional to 404,524.85, 560,604.06 and 398,816.78 is: 552,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,524.85 : 560,604.06 = 398,816.78 : x
  2. Step 2: Convert to fraction form
    404,524.85/560,604.06 = 398,816.78/x
  3. Step 3: Cross multiply
    404,524.85x = 560,604.06 × 398,816.78
  4. Step 4: Simplify right side
    404,524.85x = 223,578,303,261.11
  5. Step 5: Solve for x
    x = 223,578,303,261.11/404,524.85
  6. Step 6: Final answer
    x = 552,693.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.