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Finding the Fourth Proportional to 613,874.88, 920,937.60 and 258,888.24

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Solution

The fourth proportional to 613,874.88, 920,937.60 and 258,888.24 is: 388,385.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,874.88 : 920,937.60 = 258,888.24 : x
  2. Step 2: Convert to fraction form
    613,874.88/920,937.60 = 258,888.24/x
  3. Step 3: Cross multiply
    613,874.88x = 920,937.60 × 258,888.24
  4. Step 4: Simplify right side
    613,874.88x = 238,419,914,413.82
  5. Step 5: Solve for x
    x = 238,419,914,413.82/613,874.88
  6. Step 6: Final answer
    x = 388,385.19

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Similar ratio
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1.5x scale

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.