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Finding the Fourth Proportional to 593,138.64, 818,531.68 and 321,208.64

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Solution

The fourth proportional to 593,138.64, 818,531.68 and 321,208.64 is: 443,268.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,138.64 : 818,531.68 = 321,208.64 : x
  2. Step 2: Convert to fraction form
    593,138.64/818,531.68 = 321,208.64/x
  3. Step 3: Cross multiply
    593,138.64x = 818,531.68 × 321,208.64
  4. Step 4: Simplify right side
    593,138.64x = 262,919,447,729.72
  5. Step 5: Solve for x
    x = 262,919,447,729.72/593,138.64
  6. Step 6: Final answer
    x = 443,268.12

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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.