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Finding the Fourth Proportional to 619,557, 929,108.42 and 214,644.62

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Solution

The fourth proportional to 619,557, 929,108.42 and 214,644.62 is: 321,888.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,557 : 929,108.42 = 214,644.62 : x
  2. Step 2: Convert to fraction form
    619,557/929,108.42 = 214,644.62/x
  3. Step 3: Cross multiply
    619,557x = 929,108.42 × 214,644.62
  4. Step 4: Simplify right side
    619,557x = 199,428,123,749.70
  5. Step 5: Solve for x
    x = 199,428,123,749.70/619,557
  6. Step 6: Final answer
    x = 321,888.26

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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.