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Finding the Fourth Proportional to 11,957.36, 17,916.05 and 8,441.60

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Solution

The fourth proportional to 11,957.36, 17,916.05 and 8,441.60 is: 12,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,957.36 : 17,916.05 = 8,441.60 : x
  2. Step 2: Convert to fraction form
    11,957.36/17,916.05 = 8,441.60/x
  3. Step 3: Cross multiply
    11,957.36x = 17,916.05 × 8,441.60
  4. Step 4: Simplify right side
    11,957.36x = 151,239,995.89
  5. Step 5: Solve for x
    x = 151,239,995.89/11,957.36
  6. Step 6: Final answer
    x = 12,648.28

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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.