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Finding the Fourth Proportional to 8,836.45, 12,182.93 and 7,237.20

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Solution

The fourth proportional to 8,836.45, 12,182.93 and 7,237.20 is: 9,978.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,836.45 : 12,182.93 = 7,237.20 : x
  2. Step 2: Convert to fraction form
    8,836.45/12,182.93 = 7,237.20/x
  3. Step 3: Cross multiply
    8,836.45x = 12,182.93 × 7,237.20
  4. Step 4: Simplify right side
    8,836.45x = 88,170,295.27
  5. Step 5: Solve for x
    x = 88,170,295.27/8,836.45
  6. Step 6: Final answer
    x = 9,978.03

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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.