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Finding the Fourth Proportional to 43,758.40, 65,618.40 and 17,454.40

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Solution

The fourth proportional to 43,758.40, 65,618.40 and 17,454.40 is: 26,173.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,758.40 : 65,618.40 = 17,454.40 : x
  2. Step 2: Convert to fraction form
    43,758.40/65,618.40 = 17,454.40/x
  3. Step 3: Cross multiply
    43,758.40x = 65,618.40 × 17,454.40
  4. Step 4: Simplify right side
    43,758.40x = 1,145,329,800.96
  5. Step 5: Solve for x
    x = 1,145,329,800.96/43,758.40
  6. Step 6: Final answer
    x = 26,173.94

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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.