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Finding the Fourth Proportional to 18,372.76, 25,354.64 and 10,822.15

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Solution

The fourth proportional to 18,372.76, 25,354.64 and 10,822.15 is: 14,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.76 : 25,354.64 = 10,822.15 : x
  2. Step 2: Convert to fraction form
    18,372.76/25,354.64 = 10,822.15/x
  3. Step 3: Cross multiply
    18,372.76x = 25,354.64 × 10,822.15
  4. Step 4: Simplify right side
    18,372.76x = 274,391,717.28
  5. Step 5: Solve for x
    x = 274,391,717.28/18,372.76
  6. Step 6: Final answer
    x = 14,934.70

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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.