Home / 206,560.20-309,840.30-66,417.24

Finding the Fourth Proportional to 206,560.20, 309,840.30 and 66,417.24

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Solution

The fourth proportional to 206,560.20, 309,840.30 and 66,417.24 is: 99,625.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,560.20 : 309,840.30 = 66,417.24 : x
  2. Step 2: Convert to fraction form
    206,560.20/309,840.30 = 66,417.24/x
  3. Step 3: Cross multiply
    206,560.20x = 309,840.30 × 66,417.24
  4. Step 4: Simplify right side
    206,560.20x = 20,578,737,566.77
  5. Step 5: Solve for x
    x = 20,578,737,566.77/206,560.20
  6. Step 6: Final answer
    x = 99,625.86

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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.