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Finding the Fourth Proportional to 13,242.88, 19,883.76 and 5,466.88

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Solution

The fourth proportional to 13,242.88, 19,883.76 and 5,466.88 is: 8,208.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.88 : 19,883.76 = 5,466.88 : x
  2. Step 2: Convert to fraction form
    13,242.88/19,883.76 = 5,466.88/x
  3. Step 3: Cross multiply
    13,242.88x = 19,883.76 × 5,466.88
  4. Step 4: Simplify right side
    13,242.88x = 108,702,129.87
  5. Step 5: Solve for x
    x = 108,702,129.87/13,242.88
  6. Step 6: Final answer
    x = 8,208.35

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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.