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Finding the Fourth Proportional to 69,972.64, 104,989.94 and 36,684.74

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Solution

The fourth proportional to 69,972.64, 104,989.94 and 36,684.74 is: 55,043.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,972.64 : 104,989.94 = 36,684.74 : x
  2. Step 2: Convert to fraction form
    69,972.64/104,989.94 = 36,684.74/x
  3. Step 3: Cross multiply
    69,972.64x = 104,989.94 × 36,684.74
  4. Step 4: Simplify right side
    69,972.64x = 3,851,528,651.52
  5. Step 5: Solve for x
    x = 3,851,528,651.52/69,972.64
  6. Step 6: Final answer
    x = 55,043.35

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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.