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Finding the Fourth Proportional to 128,034.55, 192,033.60 and 43,798.60

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Solution

The fourth proportional to 128,034.55, 192,033.60 and 43,798.60 is: 65,691.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,034.55 : 192,033.60 = 43,798.60 : x
  2. Step 2: Convert to fraction form
    128,034.55/192,033.60 = 43,798.60/x
  3. Step 3: Cross multiply
    128,034.55x = 192,033.60 × 43,798.60
  4. Step 4: Simplify right side
    128,034.55x = 8,410,802,832.96
  5. Step 5: Solve for x
    x = 8,410,802,832.96/128,034.55
  6. Step 6: Final answer
    x = 65,691.67

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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.