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Finding the Fourth Proportional to 8,603.46, 12,905.96 and 3,338.34

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Solution

The fourth proportional to 8,603.46, 12,905.96 and 3,338.34 is: 5,007.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.46 : 12,905.96 = 3,338.34 : x
  2. Step 2: Convert to fraction form
    8,603.46/12,905.96 = 3,338.34/x
  3. Step 3: Cross multiply
    8,603.46x = 12,905.96 × 3,338.34
  4. Step 4: Simplify right side
    8,603.46x = 43,084,482.51
  5. Step 5: Solve for x
    x = 43,084,482.51/8,603.46
  6. Step 6: Final answer
    x = 5,007.81

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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.