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Finding the Fourth Proportional to 356,914.50, 535,343.38 and 143,532

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Solution

The fourth proportional to 356,914.50, 535,343.38 and 143,532 is: 215,286.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,914.50 : 535,343.38 = 143,532 : x
  2. Step 2: Convert to fraction form
    356,914.50/535,343.38 = 143,532/x
  3. Step 3: Cross multiply
    356,914.50x = 535,343.38 × 143,532
  4. Step 4: Simplify right side
    356,914.50x = 76,838,905,659.33
  5. Step 5: Solve for x
    x = 76,838,905,659.33/356,914.50
  6. Step 6: Final answer
    x = 215,286.59

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.