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Finding the Fourth Proportional to 189,185.70, 283,777.52 and 81,099.15

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Solution

The fourth proportional to 189,185.70, 283,777.52 and 81,099.15 is: 121,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,185.70 : 283,777.52 = 81,099.15 : x
  2. Step 2: Convert to fraction form
    189,185.70/283,777.52 = 81,099.15/x
  3. Step 3: Cross multiply
    189,185.70x = 283,777.52 × 81,099.15
  4. Step 4: Simplify right side
    189,185.70x = 23,014,114,242.22
  5. Step 5: Solve for x
    x = 23,014,114,242.22/189,185.70
  6. Step 6: Final answer
    x = 121,648.28

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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.