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Finding the Fourth Proportional to 15,961.92, 22,026.59 and 9,155.59

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Solution

The fourth proportional to 15,961.92, 22,026.59 and 9,155.59 is: 12,634.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,961.92 : 22,026.59 = 9,155.59 : x
  2. Step 2: Convert to fraction form
    15,961.92/22,026.59 = 9,155.59/x
  3. Step 3: Cross multiply
    15,961.92x = 22,026.59 × 9,155.59
  4. Step 4: Simplify right side
    15,961.92x = 201,666,317.01
  5. Step 5: Solve for x
    x = 201,666,317.01/15,961.92
  6. Step 6: Final answer
    x = 12,634.22

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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.