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Finding the Fourth Proportional to 156,212.40, 215,573.40 and 92,581.68

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Solution

The fourth proportional to 156,212.40, 215,573.40 and 92,581.68 is: 127,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,212.40 : 215,573.40 = 92,581.68 : x
  2. Step 2: Convert to fraction form
    156,212.40/215,573.40 = 92,581.68/x
  3. Step 3: Cross multiply
    156,212.40x = 215,573.40 × 92,581.68
  4. Step 4: Simplify right side
    156,212.40x = 19,958,147,535.31
  5. Step 5: Solve for x
    x = 19,958,147,535.31/156,212.40
  6. Step 6: Final answer
    x = 127,762.89

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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.