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Finding the Fourth Proportional to 18,824.70, 28,237.05 and 10,368.30

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Solution

The fourth proportional to 18,824.70, 28,237.05 and 10,368.30 is: 15,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.70 : 28,237.05 = 10,368.30 : x
  2. Step 2: Convert to fraction form
    18,824.70/28,237.05 = 10,368.30/x
  3. Step 3: Cross multiply
    18,824.70x = 28,237.05 × 10,368.30
  4. Step 4: Simplify right side
    18,824.70x = 292,770,205.52
  5. Step 5: Solve for x
    x = 292,770,205.52/18,824.70
  6. Step 6: Final answer
    x = 15,552.45

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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.