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Finding the Fourth Proportional to 619,176.16, 854,472.72 and 347,304.40

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Solution

The fourth proportional to 619,176.16, 854,472.72 and 347,304.40 is: 479,285.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,176.16 : 854,472.72 = 347,304.40 : x
  2. Step 2: Convert to fraction form
    619,176.16/854,472.72 = 347,304.40/x
  3. Step 3: Cross multiply
    619,176.16x = 854,472.72 × 347,304.40
  4. Step 4: Simplify right side
    619,176.16x = 296,762,135,335.97
  5. Step 5: Solve for x
    x = 296,762,135,335.97/619,176.16
  6. Step 6: Final answer
    x = 479,285.47

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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.