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Finding the Fourth Proportional to 12,508.63, 18,762.94 and 5,931.23

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Solution

The fourth proportional to 12,508.63, 18,762.94 and 5,931.23 is: 8,896.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.63 : 18,762.94 = 5,931.23 : x
  2. Step 2: Convert to fraction form
    12,508.63/18,762.94 = 5,931.23/x
  3. Step 3: Cross multiply
    12,508.63x = 18,762.94 × 5,931.23
  4. Step 4: Simplify right side
    12,508.63x = 111,287,218.80
  5. Step 5: Solve for x
    x = 111,287,218.80/12,508.63
  6. Step 6: Final answer
    x = 8,896.84

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Similar ratio
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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.