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Finding the Fourth Proportional to 2,866,986.67, 3,957,218.79 and 1,690,612.94

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Solution

The fourth proportional to 2,866,986.67, 3,957,218.79 and 1,690,612.94 is: 2,333,504.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866,986.67 : 3,957,218.79 = 1,690,612.94 : x
  2. Step 2: Convert to fraction form
    2,866,986.67/3,957,218.79 = 1,690,612.94/x
  3. Step 3: Cross multiply
    2,866,986.67x = 3,957,218.79 × 1,690,612.94
  4. Step 4: Simplify right side
    2,866,986.67x = 6,690,125,272,999.05
  5. Step 5: Solve for x
    x = 6,690,125,272,999.05/2,866,986.67
  6. Step 6: Final answer
    x = 2,333,504.15

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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.