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Finding the Fourth Proportional to 539,706.30, 809,559.45 and 165,680.70

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Solution

The fourth proportional to 539,706.30, 809,559.45 and 165,680.70 is: 248,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,706.30 : 809,559.45 = 165,680.70 : x
  2. Step 2: Convert to fraction form
    539,706.30/809,559.45 = 165,680.70/x
  3. Step 3: Cross multiply
    539,706.30x = 809,559.45 × 165,680.70
  4. Step 4: Simplify right side
    539,706.30x = 134,128,376,367.62
  5. Step 5: Solve for x
    x = 134,128,376,367.62/539,706.30
  6. Step 6: Final answer
    x = 248,521.05

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Similar ratio
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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.