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Finding the Fourth Proportional to 101,744.28, 140,406.66 and 57,032.28

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Solution

The fourth proportional to 101,744.28, 140,406.66 and 57,032.28 is: 78,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,744.28 : 140,406.66 = 57,032.28 : x
  2. Step 2: Convert to fraction form
    101,744.28/140,406.66 = 57,032.28/x
  3. Step 3: Cross multiply
    101,744.28x = 140,406.66 × 57,032.28
  4. Step 4: Simplify right side
    101,744.28x = 8,007,711,946.98
  5. Step 5: Solve for x
    x = 8,007,711,946.98/101,744.28
  6. Step 6: Final answer
    x = 78,704.30

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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.