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Finding the Fourth Proportional to 98,342.78, 135,734.53 and 62,525.80

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Solution

The fourth proportional to 98,342.78, 135,734.53 and 62,525.80 is: 86,299.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,342.78 : 135,734.53 = 62,525.80 : x
  2. Step 2: Convert to fraction form
    98,342.78/135,734.53 = 62,525.80/x
  3. Step 3: Cross multiply
    98,342.78x = 135,734.53 × 62,525.80
  4. Step 4: Simplify right side
    98,342.78x = 8,486,909,442.96
  5. Step 5: Solve for x
    x = 8,486,909,442.96/98,342.78
  6. Step 6: Final answer
    x = 86,299.26

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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.