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Finding the Fourth Proportional to 408,020.34, 612,116.91 and 127,558.74

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Solution

The fourth proportional to 408,020.34, 612,116.91 and 127,558.74 is: 191,365.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,020.34 : 612,116.91 = 127,558.74 : x
  2. Step 2: Convert to fraction form
    408,020.34/612,116.91 = 127,558.74/x
  3. Step 3: Cross multiply
    408,020.34x = 612,116.91 × 127,558.74
  4. Step 4: Simplify right side
    408,020.34x = 78,080,861,772.29
  5. Step 5: Solve for x
    x = 78,080,861,772.29/408,020.34
  6. Step 6: Final answer
    x = 191,365.12

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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.