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Finding the Fourth Proportional to 1,998,897.92, 2,758,479.60 and 1,127,917.54

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Solution

The fourth proportional to 1,998,897.92, 2,758,479.60 and 1,127,917.54 is: 1,556,526.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,897.92 : 2,758,479.60 = 1,127,917.54 : x
  2. Step 2: Convert to fraction form
    1,998,897.92/2,758,479.60 = 1,127,917.54/x
  3. Step 3: Cross multiply
    1,998,897.92x = 2,758,479.60 × 1,127,917.54
  4. Step 4: Simplify right side
    1,998,897.92x = 3,111,337,532,249.97
  5. Step 5: Solve for x
    x = 3,111,337,532,249.97/1,998,897.92
  6. Step 6: Final answer
    x = 1,556,526.48

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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.