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Finding the Fourth Proportional to 77,293.56, 106,665.12 and 43,759.56

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Solution

The fourth proportional to 77,293.56, 106,665.12 and 43,759.56 is: 60,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,293.56 : 106,665.12 = 43,759.56 : x
  2. Step 2: Convert to fraction form
    77,293.56/106,665.12 = 43,759.56/x
  3. Step 3: Cross multiply
    77,293.56x = 106,665.12 × 43,759.56
  4. Step 4: Simplify right side
    77,293.56x = 4,667,618,718.55
  5. Step 5: Solve for x
    x = 4,667,618,718.55/77,293.56
  6. Step 6: Final answer
    x = 60,388.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.