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Finding the Fourth Proportional to 714,894.57, 986,550.92 and 388,204.66

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Solution

The fourth proportional to 714,894.57, 986,550.92 and 388,204.66 is: 535,720.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,894.57 : 986,550.92 = 388,204.66 : x
  2. Step 2: Convert to fraction form
    714,894.57/986,550.92 = 388,204.66/x
  3. Step 3: Cross multiply
    714,894.57x = 986,550.92 × 388,204.66
  4. Step 4: Simplify right side
    714,894.57x = 382,983,670,177.55
  5. Step 5: Solve for x
    x = 382,983,670,177.55/714,894.57
  6. Step 6: Final answer
    x = 535,720.49

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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.