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Finding the Fourth Proportional to 98,622, 136,098.36 and 53,910

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Solution

The fourth proportional to 98,622, 136,098.36 and 53,910 is: 74,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,622 : 136,098.36 = 53,910 : x
  2. Step 2: Convert to fraction form
    98,622/136,098.36 = 53,910/x
  3. Step 3: Cross multiply
    98,622x = 136,098.36 × 53,910
  4. Step 4: Simplify right side
    98,622x = 7,337,062,587.60
  5. Step 5: Solve for x
    x = 7,337,062,587.60/98,622
  6. Step 6: Final answer
    x = 74,395.80

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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.