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Finding the Fourth Proportional to 19,203.22, 28,807.86 and 6,722.94

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Solution

The fourth proportional to 19,203.22, 28,807.86 and 6,722.94 is: 10,085.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,203.22 : 28,807.86 = 6,722.94 : x
  2. Step 2: Convert to fraction form
    19,203.22/28,807.86 = 6,722.94/x
  3. Step 3: Cross multiply
    19,203.22x = 28,807.86 × 6,722.94
  4. Step 4: Simplify right side
    19,203.22x = 193,673,514.31
  5. Step 5: Solve for x
    x = 193,673,514.31/19,203.22
  6. Step 6: Final answer
    x = 10,085.47

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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.