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Finding the Fourth Proportional to 64,805.88, 89,432.12 and 36,511.56

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Solution

The fourth proportional to 64,805.88, 89,432.12 and 36,511.56 is: 50,385.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,805.88 : 89,432.12 = 36,511.56 : x
  2. Step 2: Convert to fraction form
    64,805.88/89,432.12 = 36,511.56/x
  3. Step 3: Cross multiply
    64,805.88x = 89,432.12 × 36,511.56
  4. Step 4: Simplify right side
    64,805.88x = 3,265,306,215.31
  5. Step 5: Solve for x
    x = 3,265,306,215.31/64,805.88
  6. Step 6: Final answer
    x = 50,385.96

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1.5x scale

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.