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Finding the Fourth Proportional to 492,085.90, 738,128.85 and 482,754.70

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Solution

The fourth proportional to 492,085.90, 738,128.85 and 482,754.70 is: 724,132.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,085.90 : 738,128.85 = 482,754.70 : x
  2. Step 2: Convert to fraction form
    492,085.90/738,128.85 = 482,754.70/x
  3. Step 3: Cross multiply
    492,085.90x = 738,128.85 × 482,754.70
  4. Step 4: Simplify right side
    492,085.90x = 356,335,171,543.10
  5. Step 5: Solve for x
    x = 356,335,171,543.10/492,085.90
  6. Step 6: Final answer
    x = 724,132.05

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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.