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Finding the Fourth Proportional to 57,863.36, 86,795.04 and 18,420.50

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Solution

The fourth proportional to 57,863.36, 86,795.04 and 18,420.50 is: 27,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,863.36 : 86,795.04 = 18,420.50 : x
  2. Step 2: Convert to fraction form
    57,863.36/86,795.04 = 18,420.50/x
  3. Step 3: Cross multiply
    57,863.36x = 86,795.04 × 18,420.50
  4. Step 4: Simplify right side
    57,863.36x = 1,598,808,034.32
  5. Step 5: Solve for x
    x = 1,598,808,034.32/57,863.36
  6. Step 6: Final answer
    x = 27,630.75

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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.