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Finding the Fourth Proportional to 322,448.51, 483,672.14 and 85,791.18

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Solution

The fourth proportional to 322,448.51, 483,672.14 and 85,791.18 is: 128,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,448.51 : 483,672.14 = 85,791.18 : x
  2. Step 2: Convert to fraction form
    322,448.51/483,672.14 = 85,791.18/x
  3. Step 3: Cross multiply
    322,448.51x = 483,672.14 × 85,791.18
  4. Step 4: Simplify right side
    322,448.51x = 41,494,803,194.77
  5. Step 5: Solve for x
    x = 41,494,803,194.77/322,448.51
  6. Step 6: Final answer
    x = 128,686.60

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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.