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Finding the Fourth Proportional to 74,461.44, 111,692.88 and 21,871.80

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Solution

The fourth proportional to 74,461.44, 111,692.88 and 21,871.80 is: 32,807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,461.44 : 111,692.88 = 21,871.80 : x
  2. Step 2: Convert to fraction form
    74,461.44/111,692.88 = 21,871.80/x
  3. Step 3: Cross multiply
    74,461.44x = 111,692.88 × 21,871.80
  4. Step 4: Simplify right side
    74,461.44x = 2,442,924,332.78
  5. Step 5: Solve for x
    x = 2,442,924,332.78/74,461.44
  6. Step 6: Final answer
    x = 32,807.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.