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Finding the Fourth Proportional to 18,309.98, 25,267.95 and 10,243.58

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Solution

The fourth proportional to 18,309.98, 25,267.95 and 10,243.58 is: 14,136.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.98 : 25,267.95 = 10,243.58 : x
  2. Step 2: Convert to fraction form
    18,309.98/25,267.95 = 10,243.58/x
  3. Step 3: Cross multiply
    18,309.98x = 25,267.95 × 10,243.58
  4. Step 4: Simplify right side
    18,309.98x = 258,834,267.26
  5. Step 5: Solve for x
    x = 258,834,267.26/18,309.98
  6. Step 6: Final answer
    x = 14,136.24

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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.