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Finding the Fourth Proportional to 34,708.88, 47,892.84 and 20,559.44

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Solution

The fourth proportional to 34,708.88, 47,892.84 and 20,559.44 is: 28,368.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,708.88 : 47,892.84 = 20,559.44 : x
  2. Step 2: Convert to fraction form
    34,708.88/47,892.84 = 20,559.44/x
  3. Step 3: Cross multiply
    34,708.88x = 47,892.84 × 20,559.44
  4. Step 4: Simplify right side
    34,708.88x = 984,649,970.41
  5. Step 5: Solve for x
    x = 984,649,970.41/34,708.88
  6. Step 6: Final answer
    x = 28,368.82

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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.