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Finding the Fourth Proportional to 117,744.70, 162,915.57 and 102,668.80

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Solution

The fourth proportional to 117,744.70, 162,915.57 and 102,668.80 is: 142,056.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,744.70 : 162,915.57 = 102,668.80 : x
  2. Step 2: Convert to fraction form
    117,744.70/162,915.57 = 102,668.80/x
  3. Step 3: Cross multiply
    117,744.70x = 162,915.57 × 102,668.80
  4. Step 4: Simplify right side
    117,744.70x = 16,726,346,073.22
  5. Step 5: Solve for x
    x = 16,726,346,073.22/117,744.70
  6. Step 6: Final answer
    x = 142,056.04

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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.