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Finding the Fourth Proportional to 92,821.88, 128,127.42 and 55,096.13

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Solution

The fourth proportional to 92,821.88, 128,127.42 and 55,096.13 is: 76,052.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,821.88 : 128,127.42 = 55,096.13 : x
  2. Step 2: Convert to fraction form
    92,821.88/128,127.42 = 55,096.13/x
  3. Step 3: Cross multiply
    92,821.88x = 128,127.42 × 55,096.13
  4. Step 4: Simplify right side
    92,821.88x = 7,059,324,348.25
  5. Step 5: Solve for x
    x = 7,059,324,348.25/92,821.88
  6. Step 6: Final answer
    x = 76,052.38

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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.