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Finding the Fourth Proportional to 18,495.52, 25,522.88 and 11,422.56

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Solution

The fourth proportional to 18,495.52, 25,522.88 and 11,422.56 is: 15,762.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.52 : 25,522.88 = 11,422.56 : x
  2. Step 2: Convert to fraction form
    18,495.52/25,522.88 = 11,422.56/x
  3. Step 3: Cross multiply
    18,495.52x = 25,522.88 × 11,422.56
  4. Step 4: Simplify right side
    18,495.52x = 291,536,628.17
  5. Step 5: Solve for x
    x = 291,536,628.17/18,495.52
  6. Step 6: Final answer
    x = 15,762.55

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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.