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Finding the Fourth Proportional to 1,301,867.88, 1,796,766.30 and 728,944.98

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Solution

The fourth proportional to 1,301,867.88, 1,796,766.30 and 728,944.98 is: 1,006,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,867.88 : 1,796,766.30 = 728,944.98 : x
  2. Step 2: Convert to fraction form
    1,301,867.88/1,796,766.30 = 728,944.98/x
  3. Step 3: Cross multiply
    1,301,867.88x = 1,796,766.30 × 728,944.98
  4. Step 4: Simplify right side
    1,301,867.88x = 1,309,743,774,618.17
  5. Step 5: Solve for x
    x = 1,309,743,774,618.17/1,301,867.88
  6. Step 6: Final answer
    x = 1,006,049.69

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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.