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Finding the Fourth Proportional to 13,700.64, 18,908.68 and 10,173.92

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Solution

The fourth proportional to 13,700.64, 18,908.68 and 10,173.92 is: 14,041.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.64 : 18,908.68 = 10,173.92 : x
  2. Step 2: Convert to fraction form
    13,700.64/18,908.68 = 10,173.92/x
  3. Step 3: Cross multiply
    13,700.64x = 18,908.68 × 10,173.92
  4. Step 4: Simplify right side
    13,700.64x = 192,375,397.63
  5. Step 5: Solve for x
    x = 192,375,397.63/13,700.64
  6. Step 6: Final answer
    x = 14,041.34

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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.