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Finding the Fourth Proportional to 522,066.20, 783,099.30 and 515,067.80

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Solution

The fourth proportional to 522,066.20, 783,099.30 and 515,067.80 is: 772,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,066.20 : 783,099.30 = 515,067.80 : x
  2. Step 2: Convert to fraction form
    522,066.20/783,099.30 = 515,067.80/x
  3. Step 3: Cross multiply
    522,066.20x = 783,099.30 × 515,067.80
  4. Step 4: Simplify right side
    522,066.20x = 403,349,233,632.54
  5. Step 5: Solve for x
    x = 403,349,233,632.54/522,066.20
  6. Step 6: Final answer
    x = 772,601.70

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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.