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Finding the Fourth Proportional to 1,917,440.28, 2,645,978.94 and 1,101,069.63

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Solution

The fourth proportional to 1,917,440.28, 2,645,978.94 and 1,101,069.63 is: 1,519,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917,440.28 : 2,645,978.94 = 1,101,069.63 : x
  2. Step 2: Convert to fraction form
    1,917,440.28/2,645,978.94 = 1,101,069.63/x
  3. Step 3: Cross multiply
    1,917,440.28x = 2,645,978.94 × 1,101,069.63
  4. Step 4: Simplify right side
    1,917,440.28x = 2,913,407,052,453.59
  5. Step 5: Solve for x
    x = 2,913,407,052,453.59/1,917,440.28
  6. Step 6: Final answer
    x = 1,519,425.19

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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.