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Finding the Fourth Proportional to 18,627.10, 25,705.89 and 10,671.89

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Solution

The fourth proportional to 18,627.10, 25,705.89 and 10,671.89 is: 14,727.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.10 : 25,705.89 = 10,671.89 : x
  2. Step 2: Convert to fraction form
    18,627.10/25,705.89 = 10,671.89/x
  3. Step 3: Cross multiply
    18,627.10x = 25,705.89 × 10,671.89
  4. Step 4: Simplify right side
    18,627.10x = 274,330,301.90
  5. Step 5: Solve for x
    x = 274,330,301.90/18,627.10
  6. Step 6: Final answer
    x = 14,727.49

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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.