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Finding the Fourth Proportional to 714,960.60, 986,651.46 and 392,674.56

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Solution

The fourth proportional to 714,960.60, 986,651.46 and 392,674.56 is: 541,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,960.60 : 986,651.46 = 392,674.56 : x
  2. Step 2: Convert to fraction form
    714,960.60/986,651.46 = 392,674.56/x
  3. Step 3: Cross multiply
    714,960.60x = 986,651.46 × 392,674.56
  4. Step 4: Simplify right side
    714,960.60x = 387,432,927,928.86
  5. Step 5: Solve for x
    x = 387,432,927,928.86/714,960.60
  6. Step 6: Final answer
    x = 541,894.10

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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.