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Finding the Fourth Proportional to 362,603.64, 543,903.18 and 140,987.64

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Solution

The fourth proportional to 362,603.64, 543,903.18 and 140,987.64 is: 211,480.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,603.64 : 543,903.18 = 140,987.64 : x
  2. Step 2: Convert to fraction form
    362,603.64/543,903.18 = 140,987.64/x
  3. Step 3: Cross multiply
    362,603.64x = 543,903.18 × 140,987.64
  4. Step 4: Simplify right side
    362,603.64x = 76,683,625,736.70
  5. Step 5: Solve for x
    x = 76,683,625,736.70/362,603.64
  6. Step 6: Final answer
    x = 211,480.57

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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.