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Finding the Fourth Proportional to 559,553.38, 771,261.33 and 395,998.90

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Solution

The fourth proportional to 559,553.38, 771,261.33 and 395,998.90 is: 545,825.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,553.38 : 771,261.33 = 395,998.90 : x
  2. Step 2: Convert to fraction form
    559,553.38/771,261.33 = 395,998.90/x
  3. Step 3: Cross multiply
    559,553.38x = 771,261.33 × 395,998.90
  4. Step 4: Simplify right side
    559,553.38x = 305,418,638,292.54
  5. Step 5: Solve for x
    x = 305,418,638,292.54/559,553.38
  6. Step 6: Final answer
    x = 545,825.74

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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.