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Finding the Fourth Proportional to 21,957.48, 32,949.72 and 10,271.88

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Solution

The fourth proportional to 21,957.48, 32,949.72 and 10,271.88 is: 15,414.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.48 : 32,949.72 = 10,271.88 : x
  2. Step 2: Convert to fraction form
    21,957.48/32,949.72 = 10,271.88/x
  3. Step 3: Cross multiply
    21,957.48x = 32,949.72 × 10,271.88
  4. Step 4: Simplify right side
    21,957.48x = 338,455,569.87
  5. Step 5: Solve for x
    x = 338,455,569.87/21,957.48
  6. Step 6: Final answer
    x = 15,414.14

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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.