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Finding the Fourth Proportional to 18,314.88, 25,274.88 and 11,237.76

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Solution

The fourth proportional to 18,314.88, 25,274.88 and 11,237.76 is: 15,508.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314.88 : 25,274.88 = 11,237.76 : x
  2. Step 2: Convert to fraction form
    18,314.88/25,274.88 = 11,237.76/x
  3. Step 3: Cross multiply
    18,314.88x = 25,274.88 × 11,237.76
  4. Step 4: Simplify right side
    18,314.88x = 284,033,035.47
  5. Step 5: Solve for x
    x = 284,033,035.47/18,314.88
  6. Step 6: Final answer
    x = 15,508.32

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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.