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Finding the Fourth Proportional to 825,865.80, 1,238,798.70 and 825,865.80

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Solution

The fourth proportional to 825,865.80, 1,238,798.70 and 825,865.80 is: 1,238,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,865.80 : 1,238,798.70 = 825,865.80 : x
  2. Step 2: Convert to fraction form
    825,865.80/1,238,798.70 = 825,865.80/x
  3. Step 3: Cross multiply
    825,865.80x = 1,238,798.70 × 825,865.80
  4. Step 4: Simplify right side
    825,865.80x = 1,023,081,479,414.46
  5. Step 5: Solve for x
    x = 1,023,081,479,414.46/825,865.80
  6. Step 6: Final answer
    x = 1,238,798.70

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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.