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Finding the Fourth Proportional to 12,679.44, 19,012.36 and 7,058.88

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Solution

The fourth proportional to 12,679.44, 19,012.36 and 7,058.88 is: 10,584.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.44 : 19,012.36 = 7,058.88 : x
  2. Step 2: Convert to fraction form
    12,679.44/19,012.36 = 7,058.88/x
  3. Step 3: Cross multiply
    12,679.44x = 19,012.36 × 7,058.88
  4. Step 4: Simplify right side
    12,679.44x = 134,205,967.76
  5. Step 5: Solve for x
    x = 134,205,967.76/12,679.44
  6. Step 6: Final answer
    x = 10,584.53

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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.