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Finding the Fourth Proportional to 326,990.18, 490,284.54 and 127,077.14

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Solution

The fourth proportional to 326,990.18, 490,284.54 and 127,077.14 is: 190,537.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,990.18 : 490,284.54 = 127,077.14 : x
  2. Step 2: Convert to fraction form
    326,990.18/490,284.54 = 127,077.14/x
  3. Step 3: Cross multiply
    326,990.18x = 490,284.54 × 127,077.14
  4. Step 4: Simplify right side
    326,990.18x = 62,303,954,677.99
  5. Step 5: Solve for x
    x = 62,303,954,677.99/326,990.18
  6. Step 6: Final answer
    x = 190,537.70

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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.