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Finding the Fourth Proportional to 15,889.52, 21,926.04 and 9,514.92

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Solution

The fourth proportional to 15,889.52, 21,926.04 and 9,514.92 is: 13,129.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,889.52 : 21,926.04 = 9,514.92 : x
  2. Step 2: Convert to fraction form
    15,889.52/21,926.04 = 9,514.92/x
  3. Step 3: Cross multiply
    15,889.52x = 21,926.04 × 9,514.92
  4. Step 4: Simplify right side
    15,889.52x = 208,624,493.25
  5. Step 5: Solve for x
    x = 208,624,493.25/15,889.52
  6. Step 6: Final answer
    x = 13,129.69

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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.