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Finding the Fourth Proportional to 64,840.77, 89,477.01 and 36,548.28

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Solution

The fourth proportional to 64,840.77, 89,477.01 and 36,548.28 is: 50,434.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,840.77 : 89,477.01 = 36,548.28 : x
  2. Step 2: Convert to fraction form
    64,840.77/89,477.01 = 36,548.28/x
  3. Step 3: Cross multiply
    64,840.77x = 89,477.01 × 36,548.28
  4. Step 4: Simplify right side
    64,840.77x = 3,270,230,815.04
  5. Step 5: Solve for x
    x = 3,270,230,815.04/64,840.77
  6. Step 6: Final answer
    x = 50,434.79

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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.