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Finding the Fourth Proportional to 64,899.36, 89,553.60 and 36,605.52

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Solution

The fourth proportional to 64,899.36, 89,553.60 and 36,605.52 is: 50,511.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,899.36 : 89,553.60 = 36,605.52 : x
  2. Step 2: Convert to fraction form
    64,899.36/89,553.60 = 36,605.52/x
  3. Step 3: Cross multiply
    64,899.36x = 89,553.60 × 36,605.52
  4. Step 4: Simplify right side
    64,899.36x = 3,278,156,095.87
  5. Step 5: Solve for x
    x = 3,278,156,095.87/64,899.36
  6. Step 6: Final answer
    x = 50,511.38

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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.