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Finding the Fourth Proportional to 18,880.52, 26,047.16 and 12,508.52

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Solution

The fourth proportional to 18,880.52, 26,047.16 and 12,508.52 is: 17,256.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.52 : 26,047.16 = 12,508.52 : x
  2. Step 2: Convert to fraction form
    18,880.52/26,047.16 = 12,508.52/x
  3. Step 3: Cross multiply
    18,880.52x = 26,047.16 × 12,508.52
  4. Step 4: Simplify right side
    18,880.52x = 325,811,421.80
  5. Step 5: Solve for x
    x = 325,811,421.80/18,880.52
  6. Step 6: Final answer
    x = 17,256.49

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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.