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Finding the Fourth Proportional to 1,269,905.52, 1,752,413.40 and 696,946.80

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Solution

The fourth proportional to 1,269,905.52, 1,752,413.40 and 696,946.80 is: 961,755.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,905.52 : 1,752,413.40 = 696,946.80 : x
  2. Step 2: Convert to fraction form
    1,269,905.52/1,752,413.40 = 696,946.80/x
  3. Step 3: Cross multiply
    1,269,905.52x = 1,752,413.40 × 696,946.80
  4. Step 4: Simplify right side
    1,269,905.52x = 1,221,338,911,407.12
  5. Step 5: Solve for x
    x = 1,221,338,911,407.12/1,269,905.52
  6. Step 6: Final answer
    x = 961,755.73

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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.