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Finding the Fourth Proportional to 168,795.60, 253,231.80 and 98,638.80

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Solution

The fourth proportional to 168,795.60, 253,231.80 and 98,638.80 is: 147,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,795.60 : 253,231.80 = 98,638.80 : x
  2. Step 2: Convert to fraction form
    168,795.60/253,231.80 = 98,638.80/x
  3. Step 3: Cross multiply
    168,795.60x = 253,231.80 × 98,638.80
  4. Step 4: Simplify right side
    168,795.60x = 24,978,480,873.84
  5. Step 5: Solve for x
    x = 24,978,480,873.84/168,795.60
  6. Step 6: Final answer
    x = 147,980.64

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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.