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Finding the Fourth Proportional to 389,486.25, 584,229.38 and 93,998.25

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Solution

The fourth proportional to 389,486.25, 584,229.38 and 93,998.25 is: 140,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,486.25 : 584,229.38 = 93,998.25 : x
  2. Step 2: Convert to fraction form
    389,486.25/584,229.38 = 93,998.25/x
  3. Step 3: Cross multiply
    389,486.25x = 584,229.38 × 93,998.25
  4. Step 4: Simplify right side
    389,486.25x = 54,916,538,848.59
  5. Step 5: Solve for x
    x = 54,916,538,848.59/389,486.25
  6. Step 6: Final answer
    x = 140,997.38

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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.