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Finding the Fourth Proportional to 202,487.50, 279,432.75 and 113,063.50

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Solution

The fourth proportional to 202,487.50, 279,432.75 and 113,063.50 is: 156,027.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,487.50 : 279,432.75 = 113,063.50 : x
  2. Step 2: Convert to fraction form
    202,487.50/279,432.75 = 113,063.50/x
  3. Step 3: Cross multiply
    202,487.50x = 279,432.75 × 113,063.50
  4. Step 4: Simplify right side
    202,487.50x = 31,593,644,729.63
  5. Step 5: Solve for x
    x = 31,593,644,729.63/202,487.50
  6. Step 6: Final answer
    x = 156,027.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.