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Finding the Fourth Proportional to 18,803.01, 28,180.14 and 14,085.84

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Solution

The fourth proportional to 18,803.01, 28,180.14 and 14,085.84 is: 21,110.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.01 : 28,180.14 = 14,085.84 : x
  2. Step 2: Convert to fraction form
    18,803.01/28,180.14 = 14,085.84/x
  3. Step 3: Cross multiply
    18,803.01x = 28,180.14 × 14,085.84
  4. Step 4: Simplify right side
    18,803.01x = 396,940,943.22
  5. Step 5: Solve for x
    x = 396,940,943.22/18,803.01
  6. Step 6: Final answer
    x = 21,110.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.