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Finding the Fourth Proportional to 312,227.76, 430,884.75 and 191,345.70

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Solution

The fourth proportional to 312,227.76, 430,884.75 and 191,345.70 is: 264,063.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,227.76 : 430,884.75 = 191,345.70 : x
  2. Step 2: Convert to fraction form
    312,227.76/430,884.75 = 191,345.70/x
  3. Step 3: Cross multiply
    312,227.76x = 430,884.75 × 191,345.70
  4. Step 4: Simplify right side
    312,227.76x = 82,447,944,825.62
  5. Step 5: Solve for x
    x = 82,447,944,825.62/312,227.76
  6. Step 6: Final answer
    x = 264,063.47

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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.