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Finding the Fourth Proportional to 14,899.91, 22,342.98 and 8,661.70

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Solution

The fourth proportional to 14,899.91, 22,342.98 and 8,661.70 is: 12,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,899.91 : 22,342.98 = 8,661.70 : x
  2. Step 2: Convert to fraction form
    14,899.91/22,342.98 = 8,661.70/x
  3. Step 3: Cross multiply
    14,899.91x = 22,342.98 × 8,661.70
  4. Step 4: Simplify right side
    14,899.91x = 193,528,189.87
  5. Step 5: Solve for x
    x = 193,528,189.87/14,899.91
  6. Step 6: Final answer
    x = 12,988.55

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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.