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Finding the Fourth Proportional to 20,562.84, 30,836.82 and 7,411.68

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Solution

The fourth proportional to 20,562.84, 30,836.82 and 7,411.68 is: 11,114.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.84 : 30,836.82 = 7,411.68 : x
  2. Step 2: Convert to fraction form
    20,562.84/30,836.82 = 7,411.68/x
  3. Step 3: Cross multiply
    20,562.84x = 30,836.82 × 7,411.68
  4. Step 4: Simplify right side
    20,562.84x = 228,552,642.06
  5. Step 5: Solve for x
    x = 228,552,642.06/20,562.84
  6. Step 6: Final answer
    x = 11,114.84

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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.