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Finding the Fourth Proportional to 444,402.60, 666,603.90 and 111,978.60

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Solution

The fourth proportional to 444,402.60, 666,603.90 and 111,978.60 is: 167,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,402.60 : 666,603.90 = 111,978.60 : x
  2. Step 2: Convert to fraction form
    444,402.60/666,603.90 = 111,978.60/x
  3. Step 3: Cross multiply
    444,402.60x = 666,603.90 × 111,978.60
  4. Step 4: Simplify right side
    444,402.60x = 74,645,371,476.54
  5. Step 5: Solve for x
    x = 74,645,371,476.54/444,402.60
  6. Step 6: Final answer
    x = 167,967.90

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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.