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Finding the Fourth Proportional to 12,840.03, 17,709.48 and 11,050.48

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Solution

The fourth proportional to 12,840.03, 17,709.48 and 11,050.48 is: 15,241.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.03 : 17,709.48 = 11,050.48 : x
  2. Step 2: Convert to fraction form
    12,840.03/17,709.48 = 11,050.48/x
  3. Step 3: Cross multiply
    12,840.03x = 17,709.48 × 11,050.48
  4. Step 4: Simplify right side
    12,840.03x = 195,698,254.55
  5. Step 5: Solve for x
    x = 195,698,254.55/12,840.03
  6. Step 6: Final answer
    x = 15,241.27

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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.