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Finding the Fourth Proportional to 18,603.77, 25,666.74 and 11,893.32

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Solution

The fourth proportional to 18,603.77, 25,666.74 and 11,893.32 is: 16,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.77 : 25,666.74 = 11,893.32 : x
  2. Step 2: Convert to fraction form
    18,603.77/25,666.74 = 11,893.32/x
  3. Step 3: Cross multiply
    18,603.77x = 25,666.74 × 11,893.32
  4. Step 4: Simplify right side
    18,603.77x = 305,262,752.18
  5. Step 5: Solve for x
    x = 305,262,752.18/18,603.77
  6. Step 6: Final answer
    x = 16,408.65

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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.