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Finding the Fourth Proportional to 619,897.10, 930,392.40 and 366,861.20

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Solution

The fourth proportional to 619,897.10, 930,392.40 and 366,861.20 is: 550,615.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,897.10 : 930,392.40 = 366,861.20 : x
  2. Step 2: Convert to fraction form
    619,897.10/930,392.40 = 366,861.20/x
  3. Step 3: Cross multiply
    619,897.10x = 930,392.40 × 366,861.20
  4. Step 4: Simplify right side
    619,897.10x = 341,324,872,334.88
  5. Step 5: Solve for x
    x = 341,324,872,334.88/619,897.10
  6. Step 6: Final answer
    x = 550,615.37

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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.