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Finding the Fourth Proportional to 777,776.78, 1,166,665.26 and 186,800.78

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Solution

The fourth proportional to 777,776.78, 1,166,665.26 and 186,800.78 is: 280,201.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,776.78 : 1,166,665.26 = 186,800.78 : x
  2. Step 2: Convert to fraction form
    777,776.78/1,166,665.26 = 186,800.78/x
  3. Step 3: Cross multiply
    777,776.78x = 1,166,665.26 × 186,800.78
  4. Step 4: Simplify right side
    777,776.78x = 217,933,980,566.90
  5. Step 5: Solve for x
    x = 217,933,980,566.90/777,776.78
  6. Step 6: Final answer
    x = 280,201.19

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1.5x scale

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.