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Finding the Fourth Proportional to 463,163.64, 638,962.90 and 272,090.84

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Solution

The fourth proportional to 463,163.64, 638,962.90 and 272,090.84 is: 375,366.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,163.64 : 638,962.90 = 272,090.84 : x
  2. Step 2: Convert to fraction form
    463,163.64/638,962.90 = 272,090.84/x
  3. Step 3: Cross multiply
    463,163.64x = 638,962.90 × 272,090.84
  4. Step 4: Simplify right side
    463,163.64x = 173,855,952,189.84
  5. Step 5: Solve for x
    x = 173,855,952,189.84/463,163.64
  6. Step 6: Final answer
    x = 375,366.15

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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.