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Finding the Fourth Proportional to 515,413.48, 711,109.20 and 297,593.68

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Solution

The fourth proportional to 515,413.48, 711,109.20 and 297,593.68 is: 410,586.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,413.48 : 711,109.20 = 297,593.68 : x
  2. Step 2: Convert to fraction form
    515,413.48/711,109.20 = 297,593.68/x
  3. Step 3: Cross multiply
    515,413.48x = 711,109.20 × 297,593.68
  4. Step 4: Simplify right side
    515,413.48x = 211,621,603,709.86
  5. Step 5: Solve for x
    x = 211,621,603,709.86/515,413.48
  6. Step 6: Final answer
    x = 410,586.09

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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.