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Finding the Fourth Proportional to 315,553.52, 435,498.19 and 194,691.70

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Solution

The fourth proportional to 315,553.52, 435,498.19 and 194,691.70 is: 268,695.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,553.52 : 435,498.19 = 194,691.70 : x
  2. Step 2: Convert to fraction form
    315,553.52/435,498.19 = 194,691.70/x
  3. Step 3: Cross multiply
    315,553.52x = 435,498.19 × 194,691.70
  4. Step 4: Simplify right side
    315,553.52x = 84,787,883,015.67
  5. Step 5: Solve for x
    x = 84,787,883,015.67/315,553.52
  6. Step 6: Final answer
    x = 268,695.73

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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.