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Finding the Fourth Proportional to 29,335.88, 40,468.74 and 20,957.24

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Solution

The fourth proportional to 29,335.88, 40,468.74 and 20,957.24 is: 28,910.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,335.88 : 40,468.74 = 20,957.24 : x
  2. Step 2: Convert to fraction form
    29,335.88/40,468.74 = 20,957.24/x
  3. Step 3: Cross multiply
    29,335.88x = 40,468.74 × 20,957.24
  4. Step 4: Simplify right side
    29,335.88x = 848,113,096.68
  5. Step 5: Solve for x
    x = 848,113,096.68/29,335.88
  6. Step 6: Final answer
    x = 28,910.44

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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.