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Finding the Fourth Proportional to 185,611.80, 256,144.96 and 100,728.84

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Solution

The fourth proportional to 185,611.80, 256,144.96 and 100,728.84 is: 139,006.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,611.80 : 256,144.96 = 100,728.84 : x
  2. Step 2: Convert to fraction form
    185,611.80/256,144.96 = 100,728.84/x
  3. Step 3: Cross multiply
    185,611.80x = 256,144.96 × 100,728.84
  4. Step 4: Simplify right side
    185,611.80x = 25,801,184,692.65
  5. Step 5: Solve for x
    x = 25,801,184,692.65/185,611.80
  6. Step 6: Final answer
    x = 139,006.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.