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Finding the Fourth Proportional to 573,513.16, 791,425.62 and 318,845.80

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Solution

The fourth proportional to 573,513.16, 791,425.62 and 318,845.80 is: 439,994.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,513.16 : 791,425.62 = 318,845.80 : x
  2. Step 2: Convert to fraction form
    573,513.16/791,425.62 = 318,845.80/x
  3. Step 3: Cross multiply
    573,513.16x = 791,425.62 × 318,845.80
  4. Step 4: Simplify right side
    573,513.16x = 252,342,734,949.40
  5. Step 5: Solve for x
    x = 252,342,734,949.40/573,513.16
  6. Step 6: Final answer
    x = 439,994.67

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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.