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Finding the Fourth Proportional to 12,407.58, 18,611.46 and 3,173.58

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Solution

The fourth proportional to 12,407.58, 18,611.46 and 3,173.58 is: 4,760.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407.58 : 18,611.46 = 3,173.58 : x
  2. Step 2: Convert to fraction form
    12,407.58/18,611.46 = 3,173.58/x
  3. Step 3: Cross multiply
    12,407.58x = 18,611.46 × 3,173.58
  4. Step 4: Simplify right side
    12,407.58x = 59,064,957.23
  5. Step 5: Solve for x
    x = 59,064,957.23/12,407.58
  6. Step 6: Final answer
    x = 4,760.39

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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.