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Finding the Fourth Proportional to 15,176.68, 20,943.84 and 8,804.49

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Solution

The fourth proportional to 15,176.68, 20,943.84 and 8,804.49 is: 12,150.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176.68 : 20,943.84 = 8,804.49 : x
  2. Step 2: Convert to fraction form
    15,176.68/20,943.84 = 8,804.49/x
  3. Step 3: Cross multiply
    15,176.68x = 20,943.84 × 8,804.49
  4. Step 4: Simplify right side
    15,176.68x = 184,399,829.84
  5. Step 5: Solve for x
    x = 184,399,829.84/15,176.68
  6. Step 6: Final answer
    x = 12,150.21

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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.