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Finding the Fourth Proportional to 540,086.40, 810,129.60 and 185,103.90

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Solution

The fourth proportional to 540,086.40, 810,129.60 and 185,103.90 is: 277,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,086.40 : 810,129.60 = 185,103.90 : x
  2. Step 2: Convert to fraction form
    540,086.40/810,129.60 = 185,103.90/x
  3. Step 3: Cross multiply
    540,086.40x = 810,129.60 × 185,103.90
  4. Step 4: Simplify right side
    540,086.40x = 149,958,148,465.44
  5. Step 5: Solve for x
    x = 149,958,148,465.44/540,086.40
  6. Step 6: Final answer
    x = 277,655.85

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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.