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Finding the Fourth Proportional to 1,409,972.09, 1,945,767.33 and 798,242.90

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Solution

The fourth proportional to 1,409,972.09, 1,945,767.33 and 798,242.90 is: 1,101,578.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,972.09 : 1,945,767.33 = 798,242.90 : x
  2. Step 2: Convert to fraction form
    1,409,972.09/1,945,767.33 = 798,242.90/x
  3. Step 3: Cross multiply
    1,409,972.09x = 1,945,767.33 × 798,242.90
  4. Step 4: Simplify right side
    1,409,972.09x = 1,553,194,958,095.46
  5. Step 5: Solve for x
    x = 1,553,194,958,095.46/1,409,972.09
  6. Step 6: Final answer
    x = 1,101,578.51

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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.