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Finding the Fourth Proportional to 57,878.64, 86,817.06 and 18,435.42

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Solution

The fourth proportional to 57,878.64, 86,817.06 and 18,435.42 is: 27,652.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,878.64 : 86,817.06 = 18,435.42 : x
  2. Step 2: Convert to fraction form
    57,878.64/86,817.06 = 18,435.42/x
  3. Step 3: Cross multiply
    57,878.64x = 86,817.06 × 18,435.42
  4. Step 4: Simplify right side
    57,878.64x = 1,600,508,964.27
  5. Step 5: Solve for x
    x = 1,600,508,964.27/57,878.64
  6. Step 6: Final answer
    x = 27,652.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.