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Finding the Fourth Proportional to 351,658.38, 485,288.76 and 190,514.55

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Solution

The fourth proportional to 351,658.38, 485,288.76 and 190,514.55 is: 262,910.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,658.38 : 485,288.76 = 190,514.55 : x
  2. Step 2: Convert to fraction form
    351,658.38/485,288.76 = 190,514.55/x
  3. Step 3: Cross multiply
    351,658.38x = 485,288.76 × 190,514.55
  4. Step 4: Simplify right side
    351,658.38x = 92,454,569,731.46
  5. Step 5: Solve for x
    x = 92,454,569,731.46/351,658.38
  6. Step 6: Final answer
    x = 262,910.18

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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.