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Finding the Fourth Proportional to 101,857.97, 140,561.31 and 56,535.84

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Solution

The fourth proportional to 101,857.97, 140,561.31 and 56,535.84 is: 78,017.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,857.97 : 140,561.31 = 56,535.84 : x
  2. Step 2: Convert to fraction form
    101,857.97/140,561.31 = 56,535.84/x
  3. Step 3: Cross multiply
    101,857.97x = 140,561.31 × 56,535.84
  4. Step 4: Simplify right side
    101,857.97x = 7,946,751,732.35
  5. Step 5: Solve for x
    x = 7,946,751,732.35/101,857.97
  6. Step 6: Final answer
    x = 78,017.97

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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.