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Finding the Fourth Proportional to 612,960.75, 919,441.13 and 169,728.75

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Solution

The fourth proportional to 612,960.75, 919,441.13 and 169,728.75 is: 254,593.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,960.75 : 919,441.13 = 169,728.75 : x
  2. Step 2: Convert to fraction form
    612,960.75/919,441.13 = 169,728.75/x
  3. Step 3: Cross multiply
    612,960.75x = 919,441.13 × 169,728.75
  4. Step 4: Simplify right side
    612,960.75x = 156,055,592,844.84
  5. Step 5: Solve for x
    x = 156,055,592,844.84/612,960.75
  6. Step 6: Final answer
    x = 254,593.13

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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.