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Finding the Fourth Proportional to 777,620, 1,166,430 and 186,644

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Solution

The fourth proportional to 777,620, 1,166,430 and 186,644 is: 279,966

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,620 : 1,166,430 = 186,644 : x
  2. Step 2: Convert to fraction form
    777,620/1,166,430 = 186,644/x
  3. Step 3: Cross multiply
    777,620x = 1,166,430 × 186,644
  4. Step 4: Simplify right side
    777,620x = 217,707,160,920
  5. Step 5: Solve for x
    x = 217,707,160,920/777,620
  6. Step 6: Final answer
    x = 279,966

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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.