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Finding the Fourth Proportional to 21,903.73, 32,865.95 and 11,368.15

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Solution

The fourth proportional to 21,903.73, 32,865.95 and 11,368.15 is: 17,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.73 : 32,865.95 = 11,368.15 : x
  2. Step 2: Convert to fraction form
    21,903.73/32,865.95 = 11,368.15/x
  3. Step 3: Cross multiply
    21,903.73x = 32,865.95 × 11,368.15
  4. Step 4: Simplify right side
    21,903.73x = 373,624,995.75
  5. Step 5: Solve for x
    x = 373,624,995.75/21,903.73
  6. Step 6: Final answer
    x = 17,057.60

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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.