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Finding the Fourth Proportional to 18,755.64, 25,885.96 and 10,802.46

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Solution

The fourth proportional to 18,755.64, 25,885.96 and 10,802.46 is: 14,909.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.64 : 25,885.96 = 10,802.46 : x
  2. Step 2: Convert to fraction form
    18,755.64/25,885.96 = 10,802.46/x
  3. Step 3: Cross multiply
    18,755.64x = 25,885.96 × 10,802.46
  4. Step 4: Simplify right side
    18,755.64x = 279,631,993.45
  5. Step 5: Solve for x
    x = 279,631,993.45/18,755.64
  6. Step 6: Final answer
    x = 14,909.23

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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.