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Finding the Fourth Proportional to 666,515.06, 919,789.26 and 364,709.06

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Solution

The fourth proportional to 666,515.06, 919,789.26 and 364,709.06 is: 503,297.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,515.06 : 919,789.26 = 364,709.06 : x
  2. Step 2: Convert to fraction form
    666,515.06/919,789.26 = 364,709.06/x
  3. Step 3: Cross multiply
    666,515.06x = 919,789.26 × 364,709.06
  4. Step 4: Simplify right side
    666,515.06x = 335,455,476,412.70
  5. Step 5: Solve for x
    x = 335,455,476,412.70/666,515.06
  6. Step 6: Final answer
    x = 503,297.67

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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.