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Finding the Fourth Proportional to 18,012.51, 24,868.22 and 12,356.55

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Solution

The fourth proportional to 18,012.51, 24,868.22 and 12,356.55 is: 17,059.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,012.51 : 24,868.22 = 12,356.55 : x
  2. Step 2: Convert to fraction form
    18,012.51/24,868.22 = 12,356.55/x
  3. Step 3: Cross multiply
    18,012.51x = 24,868.22 × 12,356.55
  4. Step 4: Simplify right side
    18,012.51x = 307,285,342.06
  5. Step 5: Solve for x
    x = 307,285,342.06/18,012.51
  6. Step 6: Final answer
    x = 17,059.55

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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.