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Finding the Fourth Proportional to 28,519.96, 42,785.96 and 10,750.24

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Solution

The fourth proportional to 28,519.96, 42,785.96 and 10,750.24 is: 16,127.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.96 : 42,785.96 = 10,750.24 : x
  2. Step 2: Convert to fraction form
    28,519.96/42,785.96 = 10,750.24/x
  3. Step 3: Cross multiply
    28,519.96x = 42,785.96 × 10,750.24
  4. Step 4: Simplify right side
    28,519.96x = 459,959,338.63
  5. Step 5: Solve for x
    x = 459,959,338.63/28,519.96
  6. Step 6: Final answer
    x = 16,127.63

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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.