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Finding the Fourth Proportional to 53,995.71, 81,009.11 and 16,561.28

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Solution

The fourth proportional to 53,995.71, 81,009.11 and 16,561.28 is: 24,846.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,995.71 : 81,009.11 = 16,561.28 : x
  2. Step 2: Convert to fraction form
    53,995.71/81,009.11 = 16,561.28/x
  3. Step 3: Cross multiply
    53,995.71x = 81,009.11 × 16,561.28
  4. Step 4: Simplify right side
    53,995.71x = 1,341,614,065.41
  5. Step 5: Solve for x
    x = 1,341,614,065.41/53,995.71
  6. Step 6: Final answer
    x = 24,846.68

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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.