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Finding the Fourth Proportional to 21,957.53, 32,912.67 and 9,483.42

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Solution

The fourth proportional to 21,957.53, 32,912.67 and 9,483.42 is: 14,214.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.53 : 32,912.67 = 9,483.42 : x
  2. Step 2: Convert to fraction form
    21,957.53/32,912.67 = 9,483.42/x
  3. Step 3: Cross multiply
    21,957.53x = 32,912.67 × 9,483.42
  4. Step 4: Simplify right side
    21,957.53x = 312,124,831.92
  5. Step 5: Solve for x
    x = 312,124,831.92/21,957.53
  6. Step 6: Final answer
    x = 14,214.94

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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.