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Finding the Fourth Proportional to 593,420.12, 818,920.62 and 351,821

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Solution

The fourth proportional to 593,420.12, 818,920.62 and 351,821 is: 485,513.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,420.12 : 818,920.62 = 351,821 : x
  2. Step 2: Convert to fraction form
    593,420.12/818,920.62 = 351,821/x
  3. Step 3: Cross multiply
    593,420.12x = 818,920.62 × 351,821
  4. Step 4: Simplify right side
    593,420.12x = 288,113,471,449.02
  5. Step 5: Solve for x
    x = 288,113,471,449.02/593,420.12
  6. Step 6: Final answer
    x = 485,513.49

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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.