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Finding the Fourth Proportional to 613,385.69, 920,115.29 and 192,661.57

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Solution

The fourth proportional to 613,385.69, 920,115.29 and 192,661.57 is: 289,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,385.69 : 920,115.29 = 192,661.57 : x
  2. Step 2: Convert to fraction form
    613,385.69/920,115.29 = 192,661.57/x
  3. Step 3: Cross multiply
    613,385.69x = 920,115.29 × 192,661.57
  4. Step 4: Simplify right side
    613,385.69x = 177,270,851,751.83
  5. Step 5: Solve for x
    x = 177,270,851,751.83/613,385.69
  6. Step 6: Final answer
    x = 289,003.89

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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.