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Finding the Fourth Proportional to 67,725.80, 101,588.70 and 18,477.80

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Solution

The fourth proportional to 67,725.80, 101,588.70 and 18,477.80 is: 27,716.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,725.80 : 101,588.70 = 18,477.80 : x
  2. Step 2: Convert to fraction form
    67,725.80/101,588.70 = 18,477.80/x
  3. Step 3: Cross multiply
    67,725.80x = 101,588.70 × 18,477.80
  4. Step 4: Simplify right side
    67,725.80x = 1,877,135,680.86
  5. Step 5: Solve for x
    x = 1,877,135,680.86/67,725.80
  6. Step 6: Final answer
    x = 27,716.70

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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.