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Finding the Fourth Proportional to 1,566,612, 2,161,937.76 and 851,220

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Solution

The fourth proportional to 1,566,612, 2,161,937.76 and 851,220 is: 1,174,690.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566,612 : 2,161,937.76 = 851,220 : x
  2. Step 2: Convert to fraction form
    1,566,612/2,161,937.76 = 851,220/x
  3. Step 3: Cross multiply
    1,566,612x = 2,161,937.76 × 851,220
  4. Step 4: Simplify right side
    1,566,612x = 1,840,284,660,067.20
  5. Step 5: Solve for x
    x = 1,840,284,660,067.20/1,566,612
  6. Step 6: Final answer
    x = 1,174,690.77

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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.