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Finding the Fourth Proportional to 8,897.20, 13,356.60 and 4,951.60

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Solution

The fourth proportional to 8,897.20, 13,356.60 and 4,951.60 is: 7,433.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.20 : 13,356.60 = 4,951.60 : x
  2. Step 2: Convert to fraction form
    8,897.20/13,356.60 = 4,951.60/x
  3. Step 3: Cross multiply
    8,897.20x = 13,356.60 × 4,951.60
  4. Step 4: Simplify right side
    8,897.20x = 66,136,540.56
  5. Step 5: Solve for x
    x = 66,136,540.56/8,897.20
  6. Step 6: Final answer
    x = 7,433.41

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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.