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Finding the Fourth Proportional to 18,373.87, 25,354.92 and 10,415.62

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Solution

The fourth proportional to 18,373.87, 25,354.92 and 10,415.62 is: 14,372.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.87 : 25,354.92 = 10,415.62 : x
  2. Step 2: Convert to fraction form
    18,373.87/25,354.92 = 10,415.62/x
  3. Step 3: Cross multiply
    18,373.87x = 25,354.92 × 10,415.62
  4. Step 4: Simplify right side
    18,373.87x = 264,087,211.85
  5. Step 5: Solve for x
    x = 264,087,211.85/18,373.87
  6. Step 6: Final answer
    x = 14,372.98

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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.