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Finding the Fourth Proportional to 12,362.45, 18,453.74 and 11,448.77

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Solution

The fourth proportional to 12,362.45, 18,453.74 and 11,448.77 is: 17,089.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,362.45 : 18,453.74 = 11,448.77 : x
  2. Step 2: Convert to fraction form
    12,362.45/18,453.74 = 11,448.77/x
  3. Step 3: Cross multiply
    12,362.45x = 18,453.74 × 11,448.77
  4. Step 4: Simplify right side
    12,362.45x = 211,272,561.25
  5. Step 5: Solve for x
    x = 211,272,561.25/12,362.45
  6. Step 6: Final answer
    x = 17,089.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.