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Finding the Fourth Proportional to 21,903.60, 32,860.88 and 6,321.22

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Solution

The fourth proportional to 21,903.60, 32,860.88 and 6,321.22 is: 9,483.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.60 : 32,860.88 = 6,321.22 : x
  2. Step 2: Convert to fraction form
    21,903.60/32,860.88 = 6,321.22/x
  3. Step 3: Cross multiply
    21,903.60x = 32,860.88 × 6,321.22
  4. Step 4: Simplify right side
    21,903.60x = 207,720,820.27
  5. Step 5: Solve for x
    x = 207,720,820.27/21,903.60
  6. Step 6: Final answer
    x = 9,483.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.