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Finding the Fourth Proportional to 496,771.64, 685,561.41 and 279,018.63

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Solution

The fourth proportional to 496,771.64, 685,561.41 and 279,018.63 is: 385,055.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,771.64 : 685,561.41 = 279,018.63 : x
  2. Step 2: Convert to fraction form
    496,771.64/685,561.41 = 279,018.63/x
  3. Step 3: Cross multiply
    496,771.64x = 685,561.41 × 279,018.63
  4. Step 4: Simplify right side
    496,771.64x = 191,284,405,399.07
  5. Step 5: Solve for x
    x = 191,284,405,399.07/496,771.64
  6. Step 6: Final answer
    x = 385,055.01

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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.