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Finding the Fourth Proportional to 573,397.56, 791,315.64 and 318,753

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Solution

The fourth proportional to 573,397.56, 791,315.64 and 318,753 is: 439,894.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,397.56 : 791,315.64 = 318,753 : x
  2. Step 2: Convert to fraction form
    573,397.56/791,315.64 = 318,753/x
  3. Step 3: Cross multiply
    573,397.56x = 791,315.64 × 318,753
  4. Step 4: Simplify right side
    573,397.56x = 252,234,234,196.92
  5. Step 5: Solve for x
    x = 252,234,234,196.92/573,397.56
  6. Step 6: Final answer
    x = 439,894.15

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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.