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Finding the Fourth Proportional to 57,989.79, 86,984.69 and 26,820.99

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Solution

The fourth proportional to 57,989.79, 86,984.69 and 26,820.99 is: 40,231.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,989.79 : 86,984.69 = 26,820.99 : x
  2. Step 2: Convert to fraction form
    57,989.79/86,984.69 = 26,820.99/x
  3. Step 3: Cross multiply
    57,989.79x = 86,984.69 × 26,820.99
  4. Step 4: Simplify right side
    57,989.79x = 2,333,015,366.54
  5. Step 5: Solve for x
    x = 2,333,015,366.54/57,989.79
  6. Step 6: Final answer
    x = 40,231.49

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Similar ratio
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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.