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Finding the Fourth Proportional to 69,465.40, 104,125.20 and 27,329.20

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Solution

The fourth proportional to 69,465.40, 104,125.20 and 27,329.20 is: 40,965.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,465.40 : 104,125.20 = 27,329.20 : x
  2. Step 2: Convert to fraction form
    69,465.40/104,125.20 = 27,329.20/x
  3. Step 3: Cross multiply
    69,465.40x = 104,125.20 × 27,329.20
  4. Step 4: Simplify right side
    69,465.40x = 2,845,658,415.84
  5. Step 5: Solve for x
    x = 2,845,658,415.84/69,465.40
  6. Step 6: Final answer
    x = 40,965.12

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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.