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Finding the Fourth Proportional to 19,203.72, 28,785.78 and 7,354.26

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Solution

The fourth proportional to 19,203.72, 28,785.78 and 7,354.26 is: 11,023.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,203.72 : 28,785.78 = 7,354.26 : x
  2. Step 2: Convert to fraction form
    19,203.72/28,785.78 = 7,354.26/x
  3. Step 3: Cross multiply
    19,203.72x = 28,785.78 × 7,354.26
  4. Step 4: Simplify right side
    19,203.72x = 211,698,110.42
  5. Step 5: Solve for x
    x = 211,698,110.42/19,203.72
  6. Step 6: Final answer
    x = 11,023.81

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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.