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Finding the Fourth Proportional to 69,603.81, 104,412.65 and 19,684.32

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Solution

The fourth proportional to 69,603.81, 104,412.65 and 19,684.32 is: 29,528.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,603.81 : 104,412.65 = 19,684.32 : x
  2. Step 2: Convert to fraction form
    69,603.81/104,412.65 = 19,684.32/x
  3. Step 3: Cross multiply
    69,603.81x = 104,412.65 × 19,684.32
  4. Step 4: Simplify right side
    69,603.81x = 2,055,291,524.68
  5. Step 5: Solve for x
    x = 2,055,291,524.68/69,603.81
  6. Step 6: Final answer
    x = 29,528.44

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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.