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Finding the Fourth Proportional to 1,891,938.89, 2,836,220.54 and 693,581.37

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Solution

The fourth proportional to 1,891,938.89, 2,836,220.54 and 693,581.37 is: 1,039,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891,938.89 : 2,836,220.54 = 693,581.37 : x
  2. Step 2: Convert to fraction form
    1,891,938.89/2,836,220.54 = 693,581.37/x
  3. Step 3: Cross multiply
    1,891,938.89x = 2,836,220.54 × 693,581.37
  4. Step 4: Simplify right side
    1,891,938.89x = 1,967,149,724,287.43
  5. Step 5: Solve for x
    x = 1,967,149,724,287.43/1,891,938.89
  6. Step 6: Final answer
    x = 1,039,753.31

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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.