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Finding the Fourth Proportional to 48,464.97, 66,899.91 and 28,328.40

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Solution

The fourth proportional to 48,464.97, 66,899.91 and 28,328.40 is: 39,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,464.97 : 66,899.91 = 28,328.40 : x
  2. Step 2: Convert to fraction form
    48,464.97/66,899.91 = 28,328.40/x
  3. Step 3: Cross multiply
    48,464.97x = 66,899.91 × 28,328.40
  4. Step 4: Simplify right side
    48,464.97x = 1,895,167,516.68
  5. Step 5: Solve for x
    x = 1,895,167,516.68/48,464.97
  6. Step 6: Final answer
    x = 39,103.87

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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.