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Finding the Fourth Proportional to 19,752.99, 27,248.37 and 12,680.48

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Solution

The fourth proportional to 19,752.99, 27,248.37 and 12,680.48 is: 17,492.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,752.99 : 27,248.37 = 12,680.48 : x
  2. Step 2: Convert to fraction form
    19,752.99/27,248.37 = 12,680.48/x
  3. Step 3: Cross multiply
    19,752.99x = 27,248.37 × 12,680.48
  4. Step 4: Simplify right side
    19,752.99x = 345,522,274.58
  5. Step 5: Solve for x
    x = 345,522,274.58/19,752.99
  6. Step 6: Final answer
    x = 17,492.15

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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.