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Finding the Fourth Proportional to 453,382.72, 679,782.48 and 216,720.16

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Solution

The fourth proportional to 453,382.72, 679,782.48 and 216,720.16 is: 324,940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,382.72 : 679,782.48 = 216,720.16 : x
  2. Step 2: Convert to fraction form
    453,382.72/679,782.48 = 216,720.16/x
  3. Step 3: Cross multiply
    453,382.72x = 679,782.48 × 216,720.16
  4. Step 4: Simplify right side
    453,382.72x = 147,322,567,830.80
  5. Step 5: Solve for x
    x = 147,322,567,830.80/453,382.72
  6. Step 6: Final answer
    x = 324,940.85

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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.