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Finding the Fourth Proportional to 21,483.93, 32,219.64 and 7,443.39

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Solution

The fourth proportional to 21,483.93, 32,219.64 and 7,443.39 is: 11,162.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,483.93 : 32,219.64 = 7,443.39 : x
  2. Step 2: Convert to fraction form
    21,483.93/32,219.64 = 7,443.39/x
  3. Step 3: Cross multiply
    21,483.93x = 32,219.64 × 7,443.39
  4. Step 4: Simplify right side
    21,483.93x = 239,823,346.18
  5. Step 5: Solve for x
    x = 239,823,346.18/21,483.93
  6. Step 6: Final answer
    x = 11,162.92

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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.