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Finding the Fourth Proportional to 19,080.76, 26,328.18 and 12,016.60

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Solution

The fourth proportional to 19,080.76, 26,328.18 and 12,016.60 is: 16,580.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,080.76 : 26,328.18 = 12,016.60 : x
  2. Step 2: Convert to fraction form
    19,080.76/26,328.18 = 12,016.60/x
  3. Step 3: Cross multiply
    19,080.76x = 26,328.18 × 12,016.60
  4. Step 4: Simplify right side
    19,080.76x = 316,375,207.79
  5. Step 5: Solve for x
    x = 316,375,207.79/19,080.76
  6. Step 6: Final answer
    x = 16,580.85

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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.