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Finding the Fourth Proportional to 99,759.87, 137,692.26 and 57,343.05

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Solution

The fourth proportional to 99,759.87, 137,692.26 and 57,343.05 is: 79,147.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,759.87 : 137,692.26 = 57,343.05 : x
  2. Step 2: Convert to fraction form
    99,759.87/137,692.26 = 57,343.05/x
  3. Step 3: Cross multiply
    99,759.87x = 137,692.26 × 57,343.05
  4. Step 4: Simplify right side
    99,759.87x = 7,895,694,149.79
  5. Step 5: Solve for x
    x = 7,895,694,149.79/99,759.87
  6. Step 6: Final answer
    x = 79,147.00

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1.5x scale

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.