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Finding the Fourth Proportional to 18,367.63, 25,347.32 and 10,915.63

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Solution

The fourth proportional to 18,367.63, 25,347.32 and 10,915.63 is: 15,063.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.63 : 25,347.32 = 10,915.63 : x
  2. Step 2: Convert to fraction form
    18,367.63/25,347.32 = 10,915.63/x
  3. Step 3: Cross multiply
    18,367.63x = 25,347.32 × 10,915.63
  4. Step 4: Simplify right side
    18,367.63x = 276,681,966.61
  5. Step 5: Solve for x
    x = 276,681,966.61/18,367.63
  6. Step 6: Final answer
    x = 15,063.56

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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.