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Finding the Fourth Proportional to 465,546.68, 698,306.20 and 128,607.60

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Solution

The fourth proportional to 465,546.68, 698,306.20 and 128,607.60 is: 192,907.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,546.68 : 698,306.20 = 128,607.60 : x
  2. Step 2: Convert to fraction form
    465,546.68/698,306.20 = 128,607.60/x
  3. Step 3: Cross multiply
    465,546.68x = 698,306.20 × 128,607.60
  4. Step 4: Simplify right side
    465,546.68x = 89,807,484,447.12
  5. Step 5: Solve for x
    x = 89,807,484,447.12/465,546.68
  6. Step 6: Final answer
    x = 192,907.58

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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.