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Finding the Fourth Proportional to 29,611.52, 40,821.12 and 23,312.64

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Solution

The fourth proportional to 29,611.52, 40,821.12 and 23,312.64 is: 32,137.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,611.52 : 40,821.12 = 23,312.64 : x
  2. Step 2: Convert to fraction form
    29,611.52/40,821.12 = 23,312.64/x
  3. Step 3: Cross multiply
    29,611.52x = 40,821.12 × 23,312.64
  4. Step 4: Simplify right side
    29,611.52x = 951,648,074.96
  5. Step 5: Solve for x
    x = 951,648,074.96/29,611.52
  6. Step 6: Final answer
    x = 32,137.77

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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.