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Finding the Fourth Proportional to 465,546.54, 698,305.81 and 128,607.35

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Solution

The fourth proportional to 465,546.54, 698,305.81 and 128,607.35 is: 192,907.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,546.54 : 698,305.81 = 128,607.35 : x
  2. Step 2: Convert to fraction form
    465,546.54/698,305.81 = 128,607.35/x
  3. Step 3: Cross multiply
    465,546.54x = 698,305.81 × 128,607.35
  4. Step 4: Simplify right side
    465,546.54x = 89,807,256,141.79
  5. Step 5: Solve for x
    x = 89,807,256,141.79/465,546.54
  6. Step 6: Final answer
    x = 192,907.15

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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.