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Finding the Fourth Proportional to 372,884.64, 514,564.21 and 217,850.31

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Solution

The fourth proportional to 372,884.64, 514,564.21 and 217,850.31 is: 300,623.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,884.64 : 514,564.21 = 217,850.31 : x
  2. Step 2: Convert to fraction form
    372,884.64/514,564.21 = 217,850.31/x
  3. Step 3: Cross multiply
    372,884.64x = 514,564.21 × 217,850.31
  4. Step 4: Simplify right side
    372,884.64x = 112,097,970,461.48
  5. Step 5: Solve for x
    x = 112,097,970,461.48/372,884.64
  6. Step 6: Final answer
    x = 300,623.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.