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Finding the Fourth Proportional to 620,208.50, 929,722.15 and 199,189.13

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Solution

The fourth proportional to 620,208.50, 929,722.15 and 199,189.13 is: 298,594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,208.50 : 929,722.15 = 199,189.13 : x
  2. Step 2: Convert to fraction form
    620,208.50/929,722.15 = 199,189.13/x
  3. Step 3: Cross multiply
    620,208.50x = 929,722.15 × 199,189.13
  4. Step 4: Simplify right side
    620,208.50x = 185,190,541,800.61
  5. Step 5: Solve for x
    x = 185,190,541,800.61/620,208.50
  6. Step 6: Final answer
    x = 298,594.01

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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.