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Finding the Fourth Proportional to 21,959.91, 32,928.93 and 7,167.02

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Solution

The fourth proportional to 21,959.91, 32,928.93 and 7,167.02 is: 10,746.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.91 : 32,928.93 = 7,167.02 : x
  2. Step 2: Convert to fraction form
    21,959.91/32,928.93 = 7,167.02/x
  3. Step 3: Cross multiply
    21,959.91x = 32,928.93 × 7,167.02
  4. Step 4: Simplify right side
    21,959.91x = 236,002,135.24
  5. Step 5: Solve for x
    x = 236,002,135.24/21,959.91
  6. Step 6: Final answer
    x = 10,746.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.