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Finding the Fourth Proportional to 18,403.10, 27,605.10 and 6,716.32

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Solution

The fourth proportional to 18,403.10, 27,605.10 and 6,716.32 is: 10,074.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.10 : 27,605.10 = 6,716.32 : x
  2. Step 2: Convert to fraction form
    18,403.10/27,605.10 = 6,716.32/x
  3. Step 3: Cross multiply
    18,403.10x = 27,605.10 × 6,716.32
  4. Step 4: Simplify right side
    18,403.10x = 185,404,547.21
  5. Step 5: Solve for x
    x = 185,404,547.21/18,403.10
  6. Step 6: Final answer
    x = 10,074.64

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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.