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Finding the Fourth Proportional to 66,481.16, 99,758.99 and 35,315.60

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Solution

The fourth proportional to 66,481.16, 99,758.99 and 35,315.60 is: 52,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,481.16 : 99,758.99 = 35,315.60 : x
  2. Step 2: Convert to fraction form
    66,481.16/99,758.99 = 35,315.60/x
  3. Step 3: Cross multiply
    66,481.16x = 99,758.99 × 35,315.60
  4. Step 4: Simplify right side
    66,481.16x = 3,523,048,176.74
  5. Step 5: Solve for x
    x = 3,523,048,176.74/66,481.16
  6. Step 6: Final answer
    x = 52,993.19

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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.