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Finding the Fourth Proportional to 18,703.19, 28,059.36 and 6,223.19

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Solution

The fourth proportional to 18,703.19, 28,059.36 and 6,223.19 is: 9,336.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.19 : 28,059.36 = 6,223.19 : x
  2. Step 2: Convert to fraction form
    18,703.19/28,059.36 = 6,223.19/x
  3. Step 3: Cross multiply
    18,703.19x = 28,059.36 × 6,223.19
  4. Step 4: Simplify right side
    18,703.19x = 174,618,588.26
  5. Step 5: Solve for x
    x = 174,618,588.26/18,703.19
  6. Step 6: Final answer
    x = 9,336.30

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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.