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Finding the Fourth Proportional to 21,957.34, 32,936.03 and 5,317.39

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Solution

The fourth proportional to 21,957.34, 32,936.03 and 5,317.39 is: 7,976.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.34 : 32,936.03 = 5,317.39 : x
  2. Step 2: Convert to fraction form
    21,957.34/32,936.03 = 5,317.39/x
  3. Step 3: Cross multiply
    21,957.34x = 32,936.03 × 5,317.39
  4. Step 4: Simplify right side
    21,957.34x = 175,133,683.71
  5. Step 5: Solve for x
    x = 175,133,683.71/21,957.34
  6. Step 6: Final answer
    x = 7,976.09

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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.