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Finding the Fourth Proportional to 6,672.96, 9,208.40 and 3,688.92

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Solution

The fourth proportional to 6,672.96, 9,208.40 and 3,688.92 is: 5,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.96 : 9,208.40 = 3,688.92 : x
  2. Step 2: Convert to fraction form
    6,672.96/9,208.40 = 3,688.92/x
  3. Step 3: Cross multiply
    6,672.96x = 9,208.40 × 3,688.92
  4. Step 4: Simplify right side
    6,672.96x = 33,969,050.93
  5. Step 5: Solve for x
    x = 33,969,050.93/6,672.96
  6. Step 6: Final answer
    x = 5,090.55

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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.