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Finding the Fourth Proportional to 15,043.53, 20,762.42 and 8,583.18

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Solution

The fourth proportional to 15,043.53, 20,762.42 and 8,583.18 is: 11,846.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.53 : 20,762.42 = 8,583.18 : x
  2. Step 2: Convert to fraction form
    15,043.53/20,762.42 = 8,583.18/x
  3. Step 3: Cross multiply
    15,043.53x = 20,762.42 × 8,583.18
  4. Step 4: Simplify right side
    15,043.53x = 178,207,467.32
  5. Step 5: Solve for x
    x = 178,207,467.32/15,043.53
  6. Step 6: Final answer
    x = 11,846.12

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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.