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Finding the Fourth Proportional to 431,981.86, 647,898.94 and 116,364.95

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Solution

The fourth proportional to 431,981.86, 647,898.94 and 116,364.95 is: 174,527.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,981.86 : 647,898.94 = 116,364.95 : x
  2. Step 2: Convert to fraction form
    431,981.86/647,898.94 = 116,364.95/x
  3. Step 3: Cross multiply
    431,981.86x = 647,898.94 × 116,364.95
  4. Step 4: Simplify right side
    431,981.86x = 75,392,727,758.15
  5. Step 5: Solve for x
    x = 75,392,727,758.15/431,981.86
  6. Step 6: Final answer
    x = 174,527.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.