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Finding the Fourth Proportional to 593,493.28, 818,722.11 and 389,515.90

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Solution

The fourth proportional to 593,493.28, 818,722.11 and 389,515.90 is: 537,335.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,493.28 : 818,722.11 = 389,515.90 : x
  2. Step 2: Convert to fraction form
    593,493.28/818,722.11 = 389,515.90/x
  3. Step 3: Cross multiply
    593,493.28x = 818,722.11 × 389,515.90
  4. Step 4: Simplify right side
    593,493.28x = 318,905,279,526.55
  5. Step 5: Solve for x
    x = 318,905,279,526.55/593,493.28
  6. Step 6: Final answer
    x = 537,335.96

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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.