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Finding the Fourth Proportional to 15,036.84, 20,752.20 and 8,748

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Solution

The fourth proportional to 15,036.84, 20,752.20 and 8,748 is: 12,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.84 : 20,752.20 = 8,748 : x
  2. Step 2: Convert to fraction form
    15,036.84/20,752.20 = 8,748/x
  3. Step 3: Cross multiply
    15,036.84x = 20,752.20 × 8,748
  4. Step 4: Simplify right side
    15,036.84x = 181,540,245.60
  5. Step 5: Solve for x
    x = 181,540,245.60/15,036.84
  6. Step 6: Final answer
    x = 12,073.03

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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.