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Finding the Fourth Proportional to 19,593.92, 27,043.91 and 12,880.16

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Solution

The fourth proportional to 19,593.92, 27,043.91 and 12,880.16 is: 17,777.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,593.92 : 27,043.91 = 12,880.16 : x
  2. Step 2: Convert to fraction form
    19,593.92/27,043.91 = 12,880.16/x
  3. Step 3: Cross multiply
    19,593.92x = 27,043.91 × 12,880.16
  4. Step 4: Simplify right side
    19,593.92x = 348,329,823.42
  5. Step 5: Solve for x
    x = 348,329,823.42/19,593.92
  6. Step 6: Final answer
    x = 17,777.45

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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.