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Finding the Fourth Proportional to 52,752.52, 79,128.92 and 13,309.63

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Solution

The fourth proportional to 52,752.52, 79,128.92 and 13,309.63 is: 19,964.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,752.52 : 79,128.92 = 13,309.63 : x
  2. Step 2: Convert to fraction form
    52,752.52/79,128.92 = 13,309.63/x
  3. Step 3: Cross multiply
    52,752.52x = 79,128.92 × 13,309.63
  4. Step 4: Simplify right side
    52,752.52x = 1,053,176,928.05
  5. Step 5: Solve for x
    x = 1,053,176,928.05/52,752.52
  6. Step 6: Final answer
    x = 19,964.49

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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.