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Finding the Fourth Proportional to 319,606.20, 441,078.12 and 183,684.60

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Solution

The fourth proportional to 319,606.20, 441,078.12 and 183,684.60 is: 253,497.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,606.20 : 441,078.12 = 183,684.60 : x
  2. Step 2: Convert to fraction form
    319,606.20/441,078.12 = 183,684.60/x
  3. Step 3: Cross multiply
    319,606.20x = 441,078.12 × 183,684.60
  4. Step 4: Simplify right side
    319,606.20x = 81,019,258,040.95
  5. Step 5: Solve for x
    x = 81,019,258,040.95/319,606.20
  6. Step 6: Final answer
    x = 253,497.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.