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Finding the Fourth Proportional to 15,959.16, 22,028.76 and 9,676.80

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Solution

The fourth proportional to 15,959.16, 22,028.76 and 9,676.80 is: 13,357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,959.16 : 22,028.76 = 9,676.80 : x
  2. Step 2: Convert to fraction form
    15,959.16/22,028.76 = 9,676.80/x
  3. Step 3: Cross multiply
    15,959.16x = 22,028.76 × 9,676.80
  4. Step 4: Simplify right side
    15,959.16x = 213,167,904.77
  5. Step 5: Solve for x
    x = 213,167,904.77/15,959.16
  6. Step 6: Final answer
    x = 13,357.09

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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.