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Finding the Fourth Proportional to 21,655.97, 32,483.96 and 5,239.97

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Solution

The fourth proportional to 21,655.97, 32,483.96 and 5,239.97 is: 7,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.97 : 32,483.96 = 5,239.97 : x
  2. Step 2: Convert to fraction form
    21,655.97/32,483.96 = 5,239.97/x
  3. Step 3: Cross multiply
    21,655.97x = 32,483.96 × 5,239.97
  4. Step 4: Simplify right side
    21,655.97x = 170,214,909.08
  5. Step 5: Solve for x
    x = 170,214,909.08/21,655.97
  6. Step 6: Final answer
    x = 7,859.95

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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.