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Finding the Fourth Proportional to 907,661.70, 1,359,418.95 and 534,413.70

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Solution

The fourth proportional to 907,661.70, 1,359,418.95 and 534,413.70 is: 800,399.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,661.70 : 1,359,418.95 = 534,413.70 : x
  2. Step 2: Convert to fraction form
    907,661.70/1,359,418.95 = 534,413.70/x
  3. Step 3: Cross multiply
    907,661.70x = 1,359,418.95 × 534,413.70
  4. Step 4: Simplify right side
    907,661.70x = 726,492,110,919.62
  5. Step 5: Solve for x
    x = 726,492,110,919.62/907,661.70
  6. Step 6: Final answer
    x = 800,399.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.