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Finding the Fourth Proportional to 18,646.72, 25,677 and 18,232.88

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Solution

The fourth proportional to 18,646.72, 25,677 and 18,232.88 is: 25,107.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.72 : 25,677 = 18,232.88 : x
  2. Step 2: Convert to fraction form
    18,646.72/25,677 = 18,232.88/x
  3. Step 3: Cross multiply
    18,646.72x = 25,677 × 18,232.88
  4. Step 4: Simplify right side
    18,646.72x = 468,165,659.76
  5. Step 5: Solve for x
    x = 468,165,659.76/18,646.72
  6. Step 6: Final answer
    x = 25,107.13

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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.