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Finding the Fourth Proportional to 12,716.59, 19,069.49 and 6,871.63

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Solution

The fourth proportional to 12,716.59, 19,069.49 and 6,871.63 is: 10,304.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,716.59 : 19,069.49 = 6,871.63 : x
  2. Step 2: Convert to fraction form
    12,716.59/19,069.49 = 6,871.63/x
  3. Step 3: Cross multiply
    12,716.59x = 19,069.49 × 6,871.63
  4. Step 4: Simplify right side
    12,716.59x = 131,038,445.21
  5. Step 5: Solve for x
    x = 131,038,445.21/12,716.59
  6. Step 6: Final answer
    x = 10,304.53

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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.