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Finding the Fourth Proportional to 621,251.88, 857,121.48 and 506,333.04

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Solution

The fourth proportional to 621,251.88, 857,121.48 and 506,333.04 is: 698,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,251.88 : 857,121.48 = 506,333.04 : x
  2. Step 2: Convert to fraction form
    621,251.88/857,121.48 = 506,333.04/x
  3. Step 3: Cross multiply
    621,251.88x = 857,121.48 × 506,333.04
  4. Step 4: Simplify right side
    621,251.88x = 433,988,924,617.70
  5. Step 5: Solve for x
    x = 433,988,924,617.70/621,251.88
  6. Step 6: Final answer
    x = 698,571.61

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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.