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Finding the Fourth Proportional to 18,157.60, 25,050.92 and 11,873.60

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Solution

The fourth proportional to 18,157.60, 25,050.92 and 11,873.60 is: 16,381.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,157.60 : 25,050.92 = 11,873.60 : x
  2. Step 2: Convert to fraction form
    18,157.60/25,050.92 = 11,873.60/x
  3. Step 3: Cross multiply
    18,157.60x = 25,050.92 × 11,873.60
  4. Step 4: Simplify right side
    18,157.60x = 297,444,603.71
  5. Step 5: Solve for x
    x = 297,444,603.71/18,157.60
  6. Step 6: Final answer
    x = 16,381.27

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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.