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Finding the Fourth Proportional to 86,593.80, 129,890.70 and 58,600.20

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Solution

The fourth proportional to 86,593.80, 129,890.70 and 58,600.20 is: 87,900.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,593.80 : 129,890.70 = 58,600.20 : x
  2. Step 2: Convert to fraction form
    86,593.80/129,890.70 = 58,600.20/x
  3. Step 3: Cross multiply
    86,593.80x = 129,890.70 × 58,600.20
  4. Step 4: Simplify right side
    86,593.80x = 7,611,620,998.14
  5. Step 5: Solve for x
    x = 7,611,620,998.14/86,593.80
  6. Step 6: Final answer
    x = 87,900.30

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1.5x scale

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.