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Finding the Fourth Proportional to 66,028.66, 99,031.50 and 30,486.96

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Solution

The fourth proportional to 66,028.66, 99,031.50 and 30,486.96 is: 45,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,028.66 : 99,031.50 = 30,486.96 : x
  2. Step 2: Convert to fraction form
    66,028.66/99,031.50 = 30,486.96/x
  3. Step 3: Cross multiply
    66,028.66x = 99,031.50 × 30,486.96
  4. Step 4: Simplify right side
    66,028.66x = 3,019,169,379.24
  5. Step 5: Solve for x
    x = 3,019,169,379.24/66,028.66
  6. Step 6: Final answer
    x = 45,725.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.