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Finding the Fourth Proportional to 347,390.88, 479,391.12 and 194,431.20

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Solution

The fourth proportional to 347,390.88, 479,391.12 and 194,431.20 is: 268,310.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,390.88 : 479,391.12 = 194,431.20 : x
  2. Step 2: Convert to fraction form
    347,390.88/479,391.12 = 194,431.20/x
  3. Step 3: Cross multiply
    347,390.88x = 479,391.12 × 194,431.20
  4. Step 4: Simplify right side
    347,390.88x = 93,208,590,730.94
  5. Step 5: Solve for x
    x = 93,208,590,730.94/347,390.88
  6. Step 6: Final answer
    x = 268,310.41

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1.5x scale

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.