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Finding the Fourth Proportional to 590,978.21, 815,241.49 and 373,108.55

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Solution

The fourth proportional to 590,978.21, 815,241.49 and 373,108.55 is: 514,695.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,978.21 : 815,241.49 = 373,108.55 : x
  2. Step 2: Convert to fraction form
    590,978.21/815,241.49 = 373,108.55/x
  3. Step 3: Cross multiply
    590,978.21x = 815,241.49 × 373,108.55
  4. Step 4: Simplify right side
    590,978.21x = 304,173,568,256.13
  5. Step 5: Solve for x
    x = 304,173,568,256.13/590,978.21
  6. Step 6: Final answer
    x = 514,695.06

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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.