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Finding the Fourth Proportional to 1,796,927.45, 2,479,741.07 and 981,128.61

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Solution

The fourth proportional to 1,796,927.45, 2,479,741.07 and 981,128.61 is: 1,353,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,796,927.45 : 2,479,741.07 = 981,128.61 : x
  2. Step 2: Convert to fraction form
    1,796,927.45/2,479,741.07 = 981,128.61/x
  3. Step 3: Cross multiply
    1,796,927.45x = 2,479,741.07 × 981,128.61
  4. Step 4: Simplify right side
    1,796,927.45x = 2,432,944,904,263.37
  5. Step 5: Solve for x
    x = 2,432,944,904,263.37/1,796,927.45
  6. Step 6: Final answer
    x = 1,353,947.21

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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.