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Finding the Fourth Proportional to 573,109.20, 790,874.92 and 318,453.84

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Solution

The fourth proportional to 573,109.20, 790,874.92 and 318,453.84 is: 439,457.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,109.20 : 790,874.92 = 318,453.84 : x
  2. Step 2: Convert to fraction form
    573,109.20/790,874.92 = 318,453.84/x
  3. Step 3: Cross multiply
    573,109.20x = 790,874.92 × 318,453.84
  4. Step 4: Simplify right side
    573,109.20x = 251,857,155,233.69
  5. Step 5: Solve for x
    x = 251,857,155,233.69/573,109.20
  6. Step 6: Final answer
    x = 439,457.53

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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.