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Finding the Fourth Proportional to 619,119.98, 854,023.57 and 389,313.47

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Solution

The fourth proportional to 619,119.98, 854,023.57 and 389,313.47 is: 537,024.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,119.98 : 854,023.57 = 389,313.47 : x
  2. Step 2: Convert to fraction form
    619,119.98/854,023.57 = 389,313.47/x
  3. Step 3: Cross multiply
    619,119.98x = 854,023.57 × 389,313.47
  4. Step 4: Simplify right side
    619,119.98x = 332,482,879,498.49
  5. Step 5: Solve for x
    x = 332,482,879,498.49/619,119.98
  6. Step 6: Final answer
    x = 537,024.96

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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.