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Finding the Fourth Proportional to 256,936.65, 385,846.01 and 157,679.65

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Solution

The fourth proportional to 256,936.65, 385,846.01 and 157,679.65 is: 236,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,936.65 : 385,846.01 = 157,679.65 : x
  2. Step 2: Convert to fraction form
    256,936.65/385,846.01 = 157,679.65/x
  3. Step 3: Cross multiply
    256,936.65x = 385,846.01 × 157,679.65
  4. Step 4: Simplify right side
    256,936.65x = 60,840,063,810.70
  5. Step 5: Solve for x
    x = 60,840,063,810.70/256,936.65
  6. Step 6: Final answer
    x = 236,790.13

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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.