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Finding the Fourth Proportional to 13,812.58, 19,060.48 and 8,147.55

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Solution

The fourth proportional to 13,812.58, 19,060.48 and 8,147.55 is: 11,243.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.58 : 19,060.48 = 8,147.55 : x
  2. Step 2: Convert to fraction form
    13,812.58/19,060.48 = 8,147.55/x
  3. Step 3: Cross multiply
    13,812.58x = 19,060.48 × 8,147.55
  4. Step 4: Simplify right side
    13,812.58x = 155,296,295.49
  5. Step 5: Solve for x
    x = 155,296,295.49/13,812.58
  6. Step 6: Final answer
    x = 11,243.11

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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.