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Finding the Fourth Proportional to 572,304.94, 789,781.32 and 342,995.42

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Solution

The fourth proportional to 572,304.94, 789,781.32 and 342,995.42 is: 473,333.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,304.94 : 789,781.32 = 342,995.42 : x
  2. Step 2: Convert to fraction form
    572,304.94/789,781.32 = 342,995.42/x
  3. Step 3: Cross multiply
    572,304.94x = 789,781.32 × 342,995.42
  4. Step 4: Simplify right side
    572,304.94x = 270,891,375,561.55
  5. Step 5: Solve for x
    x = 270,891,375,561.55/572,304.94
  6. Step 6: Final answer
    x = 473,333.98

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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.