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Finding the Fourth Proportional to 1,494,932.49, 2,062,978.07 and 815,873.85

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Solution

The fourth proportional to 1,494,932.49, 2,062,978.07 and 815,873.85 is: 1,125,890.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494,932.49 : 2,062,978.07 = 815,873.85 : x
  2. Step 2: Convert to fraction form
    1,494,932.49/2,062,978.07 = 815,873.85/x
  3. Step 3: Cross multiply
    1,494,932.49x = 2,062,978.07 × 815,873.85
  4. Step 4: Simplify right side
    1,494,932.49x = 1,683,129,856,357.10
  5. Step 5: Solve for x
    x = 1,683,129,856,357.10/1,494,932.49
  6. Step 6: Final answer
    x = 1,125,890.21

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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.