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Finding the Fourth Proportional to 20,566.55, 30,843.45 and 7,417.22

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Solution

The fourth proportional to 20,566.55, 30,843.45 and 7,417.22 is: 11,123.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.55 : 30,843.45 = 7,417.22 : x
  2. Step 2: Convert to fraction form
    20,566.55/30,843.45 = 7,417.22/x
  3. Step 3: Cross multiply
    20,566.55x = 30,843.45 × 7,417.22
  4. Step 4: Simplify right side
    20,566.55x = 228,772,571.73
  5. Step 5: Solve for x
    x = 228,772,571.73/20,566.55
  6. Step 6: Final answer
    x = 11,123.52

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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.