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Finding the Fourth Proportional to 621,716.70, 931,883.85 and 266,670.30

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Solution

The fourth proportional to 621,716.70, 931,883.85 and 266,670.30 is: 399,708.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,716.70 : 931,883.85 = 266,670.30 : x
  2. Step 2: Convert to fraction form
    621,716.70/931,883.85 = 266,670.30/x
  3. Step 3: Cross multiply
    621,716.70x = 931,883.85 × 266,670.30
  4. Step 4: Simplify right side
    621,716.70x = 248,505,745,844.66
  5. Step 5: Solve for x
    x = 248,505,745,844.66/621,716.70
  6. Step 6: Final answer
    x = 399,708.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.