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Finding the Fourth Proportional to 635,618.83, 953,428.25 and 399,127.59

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Solution

The fourth proportional to 635,618.83, 953,428.25 and 399,127.59 is: 598,691.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,618.83 : 953,428.25 = 399,127.59 : x
  2. Step 2: Convert to fraction form
    635,618.83/953,428.25 = 399,127.59/x
  3. Step 3: Cross multiply
    635,618.83x = 953,428.25 × 399,127.59
  4. Step 4: Simplify right side
    635,618.83x = 380,539,519,660.42
  5. Step 5: Solve for x
    x = 380,539,519,660.42/635,618.83
  6. Step 6: Final answer
    x = 598,691.39

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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.