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Finding the Fourth Proportional to 1,939,677.75, 2,676,838.33 and 1,080,238.01

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Solution

The fourth proportional to 1,939,677.75, 2,676,838.33 and 1,080,238.01 is: 1,490,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939,677.75 : 2,676,838.33 = 1,080,238.01 : x
  2. Step 2: Convert to fraction form
    1,939,677.75/2,676,838.33 = 1,080,238.01/x
  3. Step 3: Cross multiply
    1,939,677.75x = 2,676,838.33 × 1,080,238.01
  4. Step 4: Simplify right side
    1,939,677.75x = 2,891,622,510,690.92
  5. Step 5: Solve for x
    x = 2,891,622,510,690.92/1,939,677.75
  6. Step 6: Final answer
    x = 1,490,774.70

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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.