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Finding the Fourth Proportional to 711,894.15, 982,414.31 and 389,604.06

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Solution

The fourth proportional to 711,894.15, 982,414.31 and 389,604.06 is: 537,653.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,894.15 : 982,414.31 = 389,604.06 : x
  2. Step 2: Convert to fraction form
    711,894.15/982,414.31 = 389,604.06/x
  3. Step 3: Cross multiply
    711,894.15x = 982,414.31 × 389,604.06
  4. Step 4: Simplify right side
    711,894.15x = 382,752,601,830.08
  5. Step 5: Solve for x
    x = 382,752,601,830.08/711,894.15
  6. Step 6: Final answer
    x = 537,653.81

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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.