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Finding the Fourth Proportional to 66,805.48, 92,168.68 and 38,104.51

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Solution

The fourth proportional to 66,805.48, 92,168.68 and 38,104.51 is: 52,571.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,805.48 : 92,168.68 = 38,104.51 : x
  2. Step 2: Convert to fraction form
    66,805.48/92,168.68 = 38,104.51/x
  3. Step 3: Cross multiply
    66,805.48x = 92,168.68 × 38,104.51
  4. Step 4: Simplify right side
    66,805.48x = 3,512,042,388.75
  5. Step 5: Solve for x
    x = 3,512,042,388.75/66,805.48
  6. Step 6: Final answer
    x = 52,571.17

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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.