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Finding the Fourth Proportional to 609,726.80, 914,590.20 and 189,131.60

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Solution

The fourth proportional to 609,726.80, 914,590.20 and 189,131.60 is: 283,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,726.80 : 914,590.20 = 189,131.60 : x
  2. Step 2: Convert to fraction form
    609,726.80/914,590.20 = 189,131.60/x
  3. Step 3: Cross multiply
    609,726.80x = 914,590.20 × 189,131.60
  4. Step 4: Simplify right side
    609,726.80x = 172,977,907,870.32
  5. Step 5: Solve for x
    x = 172,977,907,870.32/609,726.80
  6. Step 6: Final answer
    x = 283,697.40

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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.