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Finding the Fourth Proportional to 316,044.94, 436,288.32 and 186,942.70

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Solution

The fourth proportional to 316,044.94, 436,288.32 and 186,942.70 is: 258,067.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,044.94 : 436,288.32 = 186,942.70 : x
  2. Step 2: Convert to fraction form
    316,044.94/436,288.32 = 186,942.70/x
  3. Step 3: Cross multiply
    316,044.94x = 436,288.32 × 186,942.70
  4. Step 4: Simplify right side
    316,044.94x = 81,560,916,519.26
  5. Step 5: Solve for x
    x = 81,560,916,519.26/316,044.94
  6. Step 6: Final answer
    x = 258,067.47

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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.