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Finding the Fourth Proportional to 626,413.78, 864,822.24 and 411,923.74

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Solution

The fourth proportional to 626,413.78, 864,822.24 and 411,923.74 is: 568,698.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,413.78 : 864,822.24 = 411,923.74 : x
  2. Step 2: Convert to fraction form
    626,413.78/864,822.24 = 411,923.74/x
  3. Step 3: Cross multiply
    626,413.78x = 864,822.24 × 411,923.74
  4. Step 4: Simplify right side
    626,413.78x = 356,240,811,535.98
  5. Step 5: Solve for x
    x = 356,240,811,535.98/626,413.78
  6. Step 6: Final answer
    x = 568,698.87

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Double scale
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1.5x scale

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.