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Finding the Fourth Proportional to 15,197.94, 20,973.96 and 8,485.22

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Solution

The fourth proportional to 15,197.94, 20,973.96 and 8,485.22 is: 11,710.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,197.94 : 20,973.96 = 8,485.22 : x
  2. Step 2: Convert to fraction form
    15,197.94/20,973.96 = 8,485.22/x
  3. Step 3: Cross multiply
    15,197.94x = 20,973.96 × 8,485.22
  4. Step 4: Simplify right side
    15,197.94x = 177,968,664.87
  5. Step 5: Solve for x
    x = 177,968,664.87/15,197.94
  6. Step 6: Final answer
    x = 11,710.05

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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.