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Finding the Fourth Proportional to 17,205.68, 25,811.20 and 7,345.04

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Solution

The fourth proportional to 17,205.68, 25,811.20 and 7,345.04 is: 11,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,205.68 : 25,811.20 = 7,345.04 : x
  2. Step 2: Convert to fraction form
    17,205.68/25,811.20 = 7,345.04/x
  3. Step 3: Cross multiply
    17,205.68x = 25,811.20 × 7,345.04
  4. Step 4: Simplify right side
    17,205.68x = 189,584,296.45
  5. Step 5: Solve for x
    x = 189,584,296.45/17,205.68
  6. Step 6: Final answer
    x = 11,018.70

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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.