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Finding the Fourth Proportional to 64,964.40, 89,692.56 and 53,056.32

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Solution

The fourth proportional to 64,964.40, 89,692.56 and 53,056.32 is: 73,251.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,964.40 : 89,692.56 = 53,056.32 : x
  2. Step 2: Convert to fraction form
    64,964.40/89,692.56 = 53,056.32/x
  3. Step 3: Cross multiply
    64,964.40x = 89,692.56 × 53,056.32
  4. Step 4: Simplify right side
    64,964.40x = 4,758,757,164.98
  5. Step 5: Solve for x
    x = 4,758,757,164.98/64,964.40
  6. Step 6: Final answer
    x = 73,251.77

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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.