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Finding the Fourth Proportional to 70,089.80, 96,723.26 and 43,221.56

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Solution

The fourth proportional to 70,089.80, 96,723.26 and 43,221.56 is: 59,645.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,089.80 : 96,723.26 = 43,221.56 : x
  2. Step 2: Convert to fraction form
    70,089.80/96,723.26 = 43,221.56/x
  3. Step 3: Cross multiply
    70,089.80x = 96,723.26 × 43,221.56
  4. Step 4: Simplify right side
    70,089.80x = 4,180,529,485.76
  5. Step 5: Solve for x
    x = 4,180,529,485.76/70,089.80
  6. Step 6: Final answer
    x = 59,645.34

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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.