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Finding the Fourth Proportional to 1,944,386.40, 2,917,454.40 and 683,119.20

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Solution

The fourth proportional to 1,944,386.40, 2,917,454.40 and 683,119.20 is: 1,024,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944,386.40 : 2,917,454.40 = 683,119.20 : x
  2. Step 2: Convert to fraction form
    1,944,386.40/2,917,454.40 = 683,119.20/x
  3. Step 3: Cross multiply
    1,944,386.40x = 2,917,454.40 × 683,119.20
  4. Step 4: Simplify right side
    1,944,386.40x = 1,992,969,115,764.48
  5. Step 5: Solve for x
    x = 1,992,969,115,764.48/1,944,386.40
  6. Step 6: Final answer
    x = 1,024,986.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.