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Finding the Fourth Proportional to 18,492.64, 25,519.92 and 10,535.20

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Solution

The fourth proportional to 18,492.64, 25,519.92 and 10,535.20 is: 14,538.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.64 : 25,519.92 = 10,535.20 : x
  2. Step 2: Convert to fraction form
    18,492.64/25,519.92 = 10,535.20/x
  3. Step 3: Cross multiply
    18,492.64x = 25,519.92 × 10,535.20
  4. Step 4: Simplify right side
    18,492.64x = 268,857,461.18
  5. Step 5: Solve for x
    x = 268,857,461.18/18,492.64
  6. Step 6: Final answer
    x = 14,538.62

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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.