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Finding the Fourth Proportional to 57,219.40, 85,829.10 and 39,504.70

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Solution

The fourth proportional to 57,219.40, 85,829.10 and 39,504.70 is: 59,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,219.40 : 85,829.10 = 39,504.70 : x
  2. Step 2: Convert to fraction form
    57,219.40/85,829.10 = 39,504.70/x
  3. Step 3: Cross multiply
    57,219.40x = 85,829.10 × 39,504.70
  4. Step 4: Simplify right side
    57,219.40x = 3,390,652,846.77
  5. Step 5: Solve for x
    x = 3,390,652,846.77/57,219.40
  6. Step 6: Final answer
    x = 59,257.05

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Similar ratio
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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.