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Finding the Fourth Proportional to 21,718.84, 32,582.39 and 7,483.54

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Solution

The fourth proportional to 21,718.84, 32,582.39 and 7,483.54 is: 11,226.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718.84 : 32,582.39 = 7,483.54 : x
  2. Step 2: Convert to fraction form
    21,718.84/32,582.39 = 7,483.54/x
  3. Step 3: Cross multiply
    21,718.84x = 32,582.39 × 7,483.54
  4. Step 4: Simplify right side
    21,718.84x = 243,831,618.86
  5. Step 5: Solve for x
    x = 243,831,618.86/21,718.84
  6. Step 6: Final answer
    x = 11,226.73

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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.