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Finding the Fourth Proportional to 69,048.71, 103,573.08 and 21,671.12

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Solution

The fourth proportional to 69,048.71, 103,573.08 and 21,671.12 is: 32,506.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,048.71 : 103,573.08 = 21,671.12 : x
  2. Step 2: Convert to fraction form
    69,048.71/103,573.08 = 21,671.12/x
  3. Step 3: Cross multiply
    69,048.71x = 103,573.08 × 21,671.12
  4. Step 4: Simplify right side
    69,048.71x = 2,244,544,127.58
  5. Step 5: Solve for x
    x = 2,244,544,127.58/69,048.71
  6. Step 6: Final answer
    x = 32,506.68

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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.