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Finding the Fourth Proportional to 171,668.70, 257,430.15 and 82,949.40

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Solution

The fourth proportional to 171,668.70, 257,430.15 and 82,949.40 is: 124,388.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,668.70 : 257,430.15 = 82,949.40 : x
  2. Step 2: Convert to fraction form
    171,668.70/257,430.15 = 82,949.40/x
  3. Step 3: Cross multiply
    171,668.70x = 257,430.15 × 82,949.40
  4. Step 4: Simplify right side
    171,668.70x = 21,353,676,484.41
  5. Step 5: Solve for x
    x = 21,353,676,484.41/171,668.70
  6. Step 6: Final answer
    x = 124,388.88

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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.