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Finding the Fourth Proportional to 98,236.80, 147,268.80 and 58,809.60

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Solution

The fourth proportional to 98,236.80, 147,268.80 and 58,809.60 is: 88,162.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,236.80 : 147,268.80 = 58,809.60 : x
  2. Step 2: Convert to fraction form
    98,236.80/147,268.80 = 58,809.60/x
  3. Step 3: Cross multiply
    98,236.80x = 147,268.80 × 58,809.60
  4. Step 4: Simplify right side
    98,236.80x = 8,660,819,220.48
  5. Step 5: Solve for x
    x = 8,660,819,220.48/98,236.80
  6. Step 6: Final answer
    x = 88,162.68

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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.