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Finding the Fourth Proportional to 609,681.40, 914,522.10 and 188,999.80

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Solution

The fourth proportional to 609,681.40, 914,522.10 and 188,999.80 is: 283,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,681.40 : 914,522.10 = 188,999.80 : x
  2. Step 2: Convert to fraction form
    609,681.40/914,522.10 = 188,999.80/x
  3. Step 3: Cross multiply
    609,681.40x = 914,522.10 × 188,999.80
  4. Step 4: Simplify right side
    609,681.40x = 172,844,493,995.58
  5. Step 5: Solve for x
    x = 172,844,493,995.58/609,681.40
  6. Step 6: Final answer
    x = 283,499.70

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Half scale
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Double scale
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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.