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Finding the Fourth Proportional to 1,936,398.86, 2,672,325.06 and 1,076,940.66

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Solution

The fourth proportional to 1,936,398.86, 2,672,325.06 and 1,076,940.66 is: 1,486,230.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936,398.86 : 2,672,325.06 = 1,076,940.66 : x
  2. Step 2: Convert to fraction form
    1,936,398.86/2,672,325.06 = 1,076,940.66/x
  3. Step 3: Cross multiply
    1,936,398.86x = 2,672,325.06 × 1,076,940.66
  4. Step 4: Simplify right side
    1,936,398.86x = 2,877,935,513,850.94
  5. Step 5: Solve for x
    x = 2,877,935,513,850.94/1,936,398.86
  6. Step 6: Final answer
    x = 1,486,230.75

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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.