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Finding the Fourth Proportional to 503,725.44, 755,687.88 and 143,899.40

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Solution

The fourth proportional to 503,725.44, 755,687.88 and 143,899.40 is: 215,877.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,725.44 : 755,687.88 = 143,899.40 : x
  2. Step 2: Convert to fraction form
    503,725.44/755,687.88 = 143,899.40/x
  3. Step 3: Cross multiply
    503,725.44x = 755,687.88 × 143,899.40
  4. Step 4: Simplify right side
    503,725.44x = 108,743,028,740.83
  5. Step 5: Solve for x
    x = 108,743,028,740.83/503,725.44
  6. Step 6: Final answer
    x = 215,877.58

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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.