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Finding the Fourth Proportional to 510,190.20, 765,285.30 and 194,657.40

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Solution

The fourth proportional to 510,190.20, 765,285.30 and 194,657.40 is: 291,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,190.20 : 765,285.30 = 194,657.40 : x
  2. Step 2: Convert to fraction form
    510,190.20/765,285.30 = 194,657.40/x
  3. Step 3: Cross multiply
    510,190.20x = 765,285.30 × 194,657.40
  4. Step 4: Simplify right side
    510,190.20x = 148,968,446,756.22
  5. Step 5: Solve for x
    x = 148,968,446,756.22/510,190.20
  6. Step 6: Final answer
    x = 291,986.10

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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.