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Finding the Fourth Proportional to 66,040.16, 99,067.16 and 28,604.02

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Solution

The fourth proportional to 66,040.16, 99,067.16 and 28,604.02 is: 42,909.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,040.16 : 99,067.16 = 28,604.02 : x
  2. Step 2: Convert to fraction form
    66,040.16/99,067.16 = 28,604.02/x
  3. Step 3: Cross multiply
    66,040.16x = 99,067.16 × 28,604.02
  4. Step 4: Simplify right side
    66,040.16x = 2,833,718,530.65
  5. Step 5: Solve for x
    x = 2,833,718,530.65/66,040.16
  6. Step 6: Final answer
    x = 42,909.02

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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.