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Finding the Fourth Proportional to 12,025.32, 16,594.92 and 6,720

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Solution

The fourth proportional to 12,025.32, 16,594.92 and 6,720 is: 9,273.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,025.32 : 16,594.92 = 6,720 : x
  2. Step 2: Convert to fraction form
    12,025.32/16,594.92 = 6,720/x
  3. Step 3: Cross multiply
    12,025.32x = 16,594.92 × 6,720
  4. Step 4: Simplify right side
    12,025.32x = 111,517,862.40
  5. Step 5: Solve for x
    x = 111,517,862.40/12,025.32
  6. Step 6: Final answer
    x = 9,273.59

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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.