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Finding the Fourth Proportional to 613,759.89, 920,639.91 and 187,297.95

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Solution

The fourth proportional to 613,759.89, 920,639.91 and 187,297.95 is: 280,946.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,759.89 : 920,639.91 = 187,297.95 : x
  2. Step 2: Convert to fraction form
    613,759.89/920,639.91 = 187,297.95/x
  3. Step 3: Cross multiply
    613,759.89x = 920,639.91 × 187,297.95
  4. Step 4: Simplify right side
    613,759.89x = 172,433,965,860.96
  5. Step 5: Solve for x
    x = 172,433,965,860.96/613,759.89
  6. Step 6: Final answer
    x = 280,946.94

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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.