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Finding the Fourth Proportional to 21,797.56, 32,693.28 and 7,007.80

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Solution

The fourth proportional to 21,797.56, 32,693.28 and 7,007.80 is: 10,510.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.56 : 32,693.28 = 7,007.80 : x
  2. Step 2: Convert to fraction form
    21,797.56/32,693.28 = 7,007.80/x
  3. Step 3: Cross multiply
    21,797.56x = 32,693.28 × 7,007.80
  4. Step 4: Simplify right side
    21,797.56x = 229,107,967.58
  5. Step 5: Solve for x
    x = 229,107,967.58/21,797.56
  6. Step 6: Final answer
    x = 10,510.72

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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.