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Finding the Fourth Proportional to 18,503.61, 25,535.91 and 10,954.27

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Solution

The fourth proportional to 18,503.61, 25,535.91 and 10,954.27 is: 15,117.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.61 : 25,535.91 = 10,954.27 : x
  2. Step 2: Convert to fraction form
    18,503.61/25,535.91 = 10,954.27/x
  3. Step 3: Cross multiply
    18,503.61x = 25,535.91 × 10,954.27
  4. Step 4: Simplify right side
    18,503.61x = 279,727,252.84
  5. Step 5: Solve for x
    x = 279,727,252.84/18,503.61
  6. Step 6: Final answer
    x = 15,117.44

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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.