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Finding the Fourth Proportional to 83,412.90, 125,119.35 and 39,082.41

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Solution

The fourth proportional to 83,412.90, 125,119.35 and 39,082.41 is: 58,623.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,412.90 : 125,119.35 = 39,082.41 : x
  2. Step 2: Convert to fraction form
    83,412.90/125,119.35 = 39,082.41/x
  3. Step 3: Cross multiply
    83,412.90x = 125,119.35 × 39,082.41
  4. Step 4: Simplify right side
    83,412.90x = 4,889,965,735.63
  5. Step 5: Solve for x
    x = 4,889,965,735.63/83,412.90
  6. Step 6: Final answer
    x = 58,623.62

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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.