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Finding the Fourth Proportional to 30,511.80, 45,785.28 and 16,471.80

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Solution

The fourth proportional to 30,511.80, 45,785.28 and 16,471.80 is: 24,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,511.80 : 45,785.28 = 16,471.80 : x
  2. Step 2: Convert to fraction form
    30,511.80/45,785.28 = 16,471.80/x
  3. Step 3: Cross multiply
    30,511.80x = 45,785.28 × 16,471.80
  4. Step 4: Simplify right side
    30,511.80x = 754,165,975.10
  5. Step 5: Solve for x
    x = 754,165,975.10/30,511.80
  6. Step 6: Final answer
    x = 24,717.19

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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.