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Finding the Fourth Proportional to 14,612.51, 21,891.23 and 7,208.30

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Solution

The fourth proportional to 14,612.51, 21,891.23 and 7,208.30 is: 10,798.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,612.51 : 21,891.23 = 7,208.30 : x
  2. Step 2: Convert to fraction form
    14,612.51/21,891.23 = 7,208.30/x
  3. Step 3: Cross multiply
    14,612.51x = 21,891.23 × 7,208.30
  4. Step 4: Simplify right side
    14,612.51x = 157,798,517.17
  5. Step 5: Solve for x
    x = 157,798,517.17/14,612.51
  6. Step 6: Final answer
    x = 10,798.86

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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.