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Finding the Fourth Proportional to 16,029.96, 22,120.62 and 8,955

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Solution

The fourth proportional to 16,029.96, 22,120.62 and 8,955 is: 12,357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,029.96 : 22,120.62 = 8,955 : x
  2. Step 2: Convert to fraction form
    16,029.96/22,120.62 = 8,955/x
  3. Step 3: Cross multiply
    16,029.96x = 22,120.62 × 8,955
  4. Step 4: Simplify right side
    16,029.96x = 198,090,152.10
  5. Step 5: Solve for x
    x = 198,090,152.10/16,029.96
  6. Step 6: Final answer
    x = 12,357.50

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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.