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Finding the Fourth Proportional to 407,540.10, 611,310.15 and 141,212.10

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Solution

The fourth proportional to 407,540.10, 611,310.15 and 141,212.10 is: 211,818.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,540.10 : 611,310.15 = 141,212.10 : x
  2. Step 2: Convert to fraction form
    407,540.10/611,310.15 = 141,212.10/x
  3. Step 3: Cross multiply
    407,540.10x = 611,310.15 × 141,212.10
  4. Step 4: Simplify right side
    407,540.10x = 86,324,390,032.82
  5. Step 5: Solve for x
    x = 86,324,390,032.82/407,540.10
  6. Step 6: Final answer
    x = 211,818.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.