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Finding the Fourth Proportional to 81,011.58, 111,723.30 and 50,800.20

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Solution

The fourth proportional to 81,011.58, 111,723.30 and 50,800.20 is: 70,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,011.58 : 111,723.30 = 50,800.20 : x
  2. Step 2: Convert to fraction form
    81,011.58/111,723.30 = 50,800.20/x
  3. Step 3: Cross multiply
    81,011.58x = 111,723.30 × 50,800.20
  4. Step 4: Simplify right side
    81,011.58x = 5,675,565,984.66
  5. Step 5: Solve for x
    x = 5,675,565,984.66/81,011.58
  6. Step 6: Final answer
    x = 70,058.70

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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.