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Finding the Fourth Proportional to 18,708.80, 25,819.68 and 10,752.32

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Solution

The fourth proportional to 18,708.80, 25,819.68 and 10,752.32 is: 14,839.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.80 : 25,819.68 = 10,752.32 : x
  2. Step 2: Convert to fraction form
    18,708.80/25,819.68 = 10,752.32/x
  3. Step 3: Cross multiply
    18,708.80x = 25,819.68 × 10,752.32
  4. Step 4: Simplify right side
    18,708.80x = 277,621,461.66
  5. Step 5: Solve for x
    x = 277,621,461.66/18,708.80
  6. Step 6: Final answer
    x = 14,839.08

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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.