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Finding the Fourth Proportional to 64,859.21, 89,509.82 and 36,566.72

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Solution

The fourth proportional to 64,859.21, 89,509.82 and 36,566.72 is: 50,464.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,859.21 : 89,509.82 = 36,566.72 : x
  2. Step 2: Convert to fraction form
    64,859.21/89,509.82 = 36,566.72/x
  3. Step 3: Cross multiply
    64,859.21x = 89,509.82 × 36,566.72
  4. Step 4: Simplify right side
    64,859.21x = 3,273,080,525.19
  5. Step 5: Solve for x
    x = 3,273,080,525.19/64,859.21
  6. Step 6: Final answer
    x = 50,464.39

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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.