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Finding the Fourth Proportional to 312,230.45, 430,888.47 and 191,348.39

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Solution

The fourth proportional to 312,230.45, 430,888.47 and 191,348.39 is: 264,067.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,230.45 : 430,888.47 = 191,348.39 : x
  2. Step 2: Convert to fraction form
    312,230.45/430,888.47 = 191,348.39/x
  3. Step 3: Cross multiply
    312,230.45x = 430,888.47 × 191,348.39
  4. Step 4: Simplify right side
    312,230.45x = 82,449,815,004.06
  5. Step 5: Solve for x
    x = 82,449,815,004.06/312,230.45
  6. Step 6: Final answer
    x = 264,067.18

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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.