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Finding the Fourth Proportional to 18,355.84, 25,331.16 and 10,802.44

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Solution

The fourth proportional to 18,355.84, 25,331.16 and 10,802.44 is: 14,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.84 : 25,331.16 = 10,802.44 : x
  2. Step 2: Convert to fraction form
    18,355.84/25,331.16 = 10,802.44/x
  3. Step 3: Cross multiply
    18,355.84x = 25,331.16 × 10,802.44
  4. Step 4: Simplify right side
    18,355.84x = 273,638,336.03
  5. Step 5: Solve for x
    x = 273,638,336.03/18,355.84
  6. Step 6: Final answer
    x = 14,907.43

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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.