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Finding the Fourth Proportional to 324,507.55, 486,761.70 and 84,621.24

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Solution

The fourth proportional to 324,507.55, 486,761.70 and 84,621.24 is: 126,931.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,507.55 : 486,761.70 = 84,621.24 : x
  2. Step 2: Convert to fraction form
    324,507.55/486,761.70 = 84,621.24/x
  3. Step 3: Cross multiply
    324,507.55x = 486,761.70 × 84,621.24
  4. Step 4: Simplify right side
    324,507.55x = 41,190,378,955.84
  5. Step 5: Solve for x
    x = 41,190,378,955.84/324,507.55
  6. Step 6: Final answer
    x = 126,931.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.