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Finding the Fourth Proportional to 986,789.42, 1,361,802.42 and 604,742.42

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Solution

The fourth proportional to 986,789.42, 1,361,802.42 and 604,742.42 is: 834,564.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,789.42 : 1,361,802.42 = 604,742.42 : x
  2. Step 2: Convert to fraction form
    986,789.42/1,361,802.42 = 604,742.42/x
  3. Step 3: Cross multiply
    986,789.42x = 1,361,802.42 × 604,742.42
  4. Step 4: Simplify right side
    986,789.42x = 823,539,691,032.66
  5. Step 5: Solve for x
    x = 823,539,691,032.66/986,789.42
  6. Step 6: Final answer
    x = 834,564.78

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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.