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Finding the Fourth Proportional to 503,789.69, 695,117.19 and 422,446.96

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Solution

The fourth proportional to 503,789.69, 695,117.19 and 422,446.96 is: 582,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,789.69 : 695,117.19 = 422,446.96 : x
  2. Step 2: Convert to fraction form
    503,789.69/695,117.19 = 422,446.96/x
  3. Step 3: Cross multiply
    503,789.69x = 695,117.19 × 422,446.96
  4. Step 4: Simplify right side
    503,789.69x = 293,650,143,759.24
  5. Step 5: Solve for x
    x = 293,650,143,759.24/503,789.69
  6. Step 6: Final answer
    x = 582,882.40

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.