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Finding the Fourth Proportional to 362,710.80, 543,677.40 and 137,984.40

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Solution

The fourth proportional to 362,710.80, 543,677.40 and 137,984.40 is: 206,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,710.80 : 543,677.40 = 137,984.40 : x
  2. Step 2: Convert to fraction form
    362,710.80/543,677.40 = 137,984.40/x
  3. Step 3: Cross multiply
    362,710.80x = 543,677.40 × 137,984.40
  4. Step 4: Simplify right side
    362,710.80x = 75,018,999,832.56
  5. Step 5: Solve for x
    x = 75,018,999,832.56/362,710.80
  6. Step 6: Final answer
    x = 206,828.69

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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.