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Finding the Fourth Proportional to 25,037.40, 37,575 and 17,121

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Solution

The fourth proportional to 25,037.40, 37,575 and 17,121 is: 25,694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,037.40 : 37,575 = 17,121 : x
  2. Step 2: Convert to fraction form
    25,037.40/37,575 = 17,121/x
  3. Step 3: Cross multiply
    25,037.40x = 37,575 × 17,121
  4. Step 4: Simplify right side
    25,037.40x = 643,321,575
  5. Step 5: Solve for x
    x = 643,321,575/25,037.40
  6. Step 6: Final answer
    x = 25,694.42

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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.