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Finding the Fourth Proportional to 1,978,539, 2,730,384 and 1,119,080.76

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Solution

The fourth proportional to 1,978,539, 2,730,384 and 1,119,080.76 is: 1,544,331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,539 : 2,730,384 = 1,119,080.76 : x
  2. Step 2: Convert to fraction form
    1,978,539/2,730,384 = 1,119,080.76/x
  3. Step 3: Cross multiply
    1,978,539x = 2,730,384 × 1,119,080.76
  4. Step 4: Simplify right side
    1,978,539x = 3,055,520,201,811.84
  5. Step 5: Solve for x
    x = 3,055,520,201,811.84/1,978,539
  6. Step 6: Final answer
    x = 1,544,331.55

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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.