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Finding the Fourth Proportional to 613,118.20, 919,706.10 and 192,407.80

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Solution

The fourth proportional to 613,118.20, 919,706.10 and 192,407.80 is: 288,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,118.20 : 919,706.10 = 192,407.80 : x
  2. Step 2: Convert to fraction form
    613,118.20/919,706.10 = 192,407.80/x
  3. Step 3: Cross multiply
    613,118.20x = 919,706.10 × 192,407.80
  4. Step 4: Simplify right side
    613,118.20x = 176,958,627,347.58
  5. Step 5: Solve for x
    x = 176,958,627,347.58/613,118.20
  6. Step 6: Final answer
    x = 288,620.74

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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.