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Finding the Fourth Proportional to 418,399.97, 577,398.51 and 227,413.85

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Solution

The fourth proportional to 418,399.97, 577,398.51 and 227,413.85 is: 313,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,399.97 : 577,398.51 = 227,413.85 : x
  2. Step 2: Convert to fraction form
    418,399.97/577,398.51 = 227,413.85/x
  3. Step 3: Cross multiply
    418,399.97x = 577,398.51 × 227,413.85
  4. Step 4: Simplify right side
    418,399.97x = 131,308,415,256.37
  5. Step 5: Solve for x
    x = 131,308,415,256.37/418,399.97
  6. Step 6: Final answer
    x = 313,834.67

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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.