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Finding the Fourth Proportional to 57,706.72, 86,551.39 and 18,258.70

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Solution

The fourth proportional to 57,706.72, 86,551.39 and 18,258.70 is: 27,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,706.72 : 86,551.39 = 18,258.70 : x
  2. Step 2: Convert to fraction form
    57,706.72/86,551.39 = 18,258.70/x
  3. Step 3: Cross multiply
    57,706.72x = 86,551.39 × 18,258.70
  4. Step 4: Simplify right side
    57,706.72x = 1,580,315,864.59
  5. Step 5: Solve for x
    x = 1,580,315,864.59/57,706.72
  6. Step 6: Final answer
    x = 27,385.30

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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.