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Finding the Fourth Proportional to 25,218.40, 37,811.40 and 10,433.20

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Solution

The fourth proportional to 25,218.40, 37,811.40 and 10,433.20 is: 15,643.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,218.40 : 37,811.40 = 10,433.20 : x
  2. Step 2: Convert to fraction form
    25,218.40/37,811.40 = 10,433.20/x
  3. Step 3: Cross multiply
    25,218.40x = 37,811.40 × 10,433.20
  4. Step 4: Simplify right side
    25,218.40x = 394,493,898.48
  5. Step 5: Solve for x
    x = 394,493,898.48/25,218.40
  6. Step 6: Final answer
    x = 15,643.10

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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.