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Finding the Fourth Proportional to 64,622.32, 89,186.84 and 36,328.03

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Solution

The fourth proportional to 64,622.32, 89,186.84 and 36,328.03 is: 50,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,622.32 : 89,186.84 = 36,328.03 : x
  2. Step 2: Convert to fraction form
    64,622.32/89,186.84 = 36,328.03/x
  3. Step 3: Cross multiply
    64,622.32x = 89,186.84 × 36,328.03
  4. Step 4: Simplify right side
    64,622.32x = 3,239,982,199.13
  5. Step 5: Solve for x
    x = 3,239,982,199.13/64,622.32
  6. Step 6: Final answer
    x = 50,137.20

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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.