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Finding the Fourth Proportional to 407,969.44, 611,954.06 and 127,486.70

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Solution

The fourth proportional to 407,969.44, 611,954.06 and 127,486.70 is: 191,230.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,969.44 : 611,954.06 = 127,486.70 : x
  2. Step 2: Convert to fraction form
    407,969.44/611,954.06 = 127,486.70/x
  3. Step 3: Cross multiply
    407,969.44x = 611,954.06 × 127,486.70
  4. Step 4: Simplify right side
    407,969.44x = 78,016,003,661.00
  5. Step 5: Solve for x
    x = 78,016,003,661.00/407,969.44
  6. Step 6: Final answer
    x = 191,230.02

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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.