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Finding the Fourth Proportional to 60,576.80, 90,692.40 and 53,664.80

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Solution

The fourth proportional to 60,576.80, 90,692.40 and 53,664.80 is: 80,344.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,576.80 : 90,692.40 = 53,664.80 : x
  2. Step 2: Convert to fraction form
    60,576.80/90,692.40 = 53,664.80/x
  3. Step 3: Cross multiply
    60,576.80x = 90,692.40 × 53,664.80
  4. Step 4: Simplify right side
    60,576.80x = 4,866,989,507.52
  5. Step 5: Solve for x
    x = 4,866,989,507.52/60,576.80
  6. Step 6: Final answer
    x = 80,344.12

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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.