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Finding the Fourth Proportional to 179,321.60, 268,885.20 and 74,021.60

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Solution

The fourth proportional to 179,321.60, 268,885.20 and 74,021.60 is: 110,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,321.60 : 268,885.20 = 74,021.60 : x
  2. Step 2: Convert to fraction form
    179,321.60/268,885.20 = 74,021.60/x
  3. Step 3: Cross multiply
    179,321.60x = 268,885.20 × 74,021.60
  4. Step 4: Simplify right side
    179,321.60x = 19,903,312,720.32
  5. Step 5: Solve for x
    x = 19,903,312,720.32/179,321.60
  6. Step 6: Final answer
    x = 110,992.28

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1.5x scale

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.