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Finding the Fourth Proportional to 18,292.84, 25,244.60 and 11,215.13

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Solution

The fourth proportional to 18,292.84, 25,244.60 and 11,215.13 is: 15,477.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,292.84 : 25,244.60 = 11,215.13 : x
  2. Step 2: Convert to fraction form
    18,292.84/25,244.60 = 11,215.13/x
  3. Step 3: Cross multiply
    18,292.84x = 25,244.60 × 11,215.13
  4. Step 4: Simplify right side
    18,292.84x = 283,121,288.50
  5. Step 5: Solve for x
    x = 283,121,288.50/18,292.84
  6. Step 6: Final answer
    x = 15,477.17

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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.