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Finding the Fourth Proportional to 662,217.80, 993,326.70 and 395,841.20

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Solution

The fourth proportional to 662,217.80, 993,326.70 and 395,841.20 is: 593,761.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,217.80 : 993,326.70 = 395,841.20 : x
  2. Step 2: Convert to fraction form
    662,217.80/993,326.70 = 395,841.20/x
  3. Step 3: Cross multiply
    662,217.80x = 993,326.70 × 395,841.20
  4. Step 4: Simplify right side
    662,217.80x = 393,199,632,920.04
  5. Step 5: Solve for x
    x = 393,199,632,920.04/662,217.80
  6. Step 6: Final answer
    x = 593,761.80

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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.