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Finding the Fourth Proportional to 157,220.82, 216,968.57 and 85,604.73

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Solution

The fourth proportional to 157,220.82, 216,968.57 and 85,604.73 is: 118,136.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,220.82 : 216,968.57 = 85,604.73 : x
  2. Step 2: Convert to fraction form
    157,220.82/216,968.57 = 85,604.73/x
  3. Step 3: Cross multiply
    157,220.82x = 216,968.57 × 85,604.73
  4. Step 4: Simplify right side
    157,220.82x = 18,573,535,425.31
  5. Step 5: Solve for x
    x = 18,573,535,425.31/157,220.82
  6. Step 6: Final answer
    x = 118,136.61

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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.