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Finding the Fourth Proportional to 103,692.80, 155,561.16 and 58,735.28

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Solution

The fourth proportional to 103,692.80, 155,561.16 and 58,735.28 is: 88,115.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,692.80 : 155,561.16 = 58,735.28 : x
  2. Step 2: Convert to fraction form
    103,692.80/155,561.16 = 58,735.28/x
  3. Step 3: Cross multiply
    103,692.80x = 155,561.16 × 58,735.28
  4. Step 4: Simplify right side
    103,692.80x = 9,136,928,289.72
  5. Step 5: Solve for x
    x = 9,136,928,289.72/103,692.80
  6. Step 6: Final answer
    x = 88,115.36

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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.