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Finding the Fourth Proportional to 63,020.80, 94,531.20 and 39,692.80

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Solution

The fourth proportional to 63,020.80, 94,531.20 and 39,692.80 is: 59,539.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,020.80 : 94,531.20 = 39,692.80 : x
  2. Step 2: Convert to fraction form
    63,020.80/94,531.20 = 39,692.80/x
  3. Step 3: Cross multiply
    63,020.80x = 94,531.20 × 39,692.80
  4. Step 4: Simplify right side
    63,020.80x = 3,752,208,015.36
  5. Step 5: Solve for x
    x = 3,752,208,015.36/63,020.80
  6. Step 6: Final answer
    x = 59,539.20

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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.