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Finding the Fourth Proportional to 15,832.51, 21,847.96 and 8,758.47

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Solution

The fourth proportional to 15,832.51, 21,847.96 and 8,758.47 is: 12,086.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,832.51 : 21,847.96 = 8,758.47 : x
  2. Step 2: Convert to fraction form
    15,832.51/21,847.96 = 8,758.47/x
  3. Step 3: Cross multiply
    15,832.51x = 21,847.96 × 8,758.47
  4. Step 4: Simplify right side
    15,832.51x = 191,354,702.22
  5. Step 5: Solve for x
    x = 191,354,702.22/15,832.51
  6. Step 6: Final answer
    x = 12,086.19

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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.