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Finding the Fourth Proportional to 51,503.71, 71,078.69 and 28,844.57

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Solution

The fourth proportional to 51,503.71, 71,078.69 and 28,844.57 is: 39,807.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,503.71 : 71,078.69 = 28,844.57 : x
  2. Step 2: Convert to fraction form
    51,503.71/71,078.69 = 28,844.57/x
  3. Step 3: Cross multiply
    51,503.71x = 71,078.69 × 28,844.57
  4. Step 4: Simplify right side
    51,503.71x = 2,050,234,249.21
  5. Step 5: Solve for x
    x = 2,050,234,249.21/51,503.71
  6. Step 6: Final answer
    x = 39,807.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.