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Finding the Fourth Proportional to 445,527.27, 668,279.84 and 129,986.91

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Solution

The fourth proportional to 445,527.27, 668,279.84 and 129,986.91 is: 194,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,527.27 : 668,279.84 = 129,986.91 : x
  2. Step 2: Convert to fraction form
    445,527.27/668,279.84 = 129,986.91/x
  3. Step 3: Cross multiply
    445,527.27x = 668,279.84 × 129,986.91
  4. Step 4: Simplify right side
    445,527.27x = 86,867,630,766.96
  5. Step 5: Solve for x
    x = 86,867,630,766.96/445,527.27
  6. Step 6: Final answer
    x = 194,977.14

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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.