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Finding the Fourth Proportional to 1,416,512, 1,954,786.56 and 780,608

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Solution

The fourth proportional to 1,416,512, 1,954,786.56 and 780,608 is: 1,077,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416,512 : 1,954,786.56 = 780,608 : x
  2. Step 2: Convert to fraction form
    1,416,512/1,954,786.56 = 780,608/x
  3. Step 3: Cross multiply
    1,416,512x = 1,954,786.56 × 780,608
  4. Step 4: Simplify right side
    1,416,512x = 1,525,922,027,028.48
  5. Step 5: Solve for x
    x = 1,525,922,027,028.48/1,416,512
  6. Step 6: Final answer
    x = 1,077,239.04

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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.