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Finding the Fourth Proportional to 34,228.48, 47,238.48 and 20,796.64

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Solution

The fourth proportional to 34,228.48, 47,238.48 and 20,796.64 is: 28,701.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,228.48 : 47,238.48 = 20,796.64 : x
  2. Step 2: Convert to fraction form
    34,228.48/47,238.48 = 20,796.64/x
  3. Step 3: Cross multiply
    34,228.48x = 47,238.48 × 20,796.64
  4. Step 4: Simplify right side
    34,228.48x = 982,401,662.71
  5. Step 5: Solve for x
    x = 982,401,662.71/34,228.48
  6. Step 6: Final answer
    x = 28,701.29

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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.