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Finding the Fourth Proportional to 408,082.60, 612,123.90 and 370,684.90

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Solution

The fourth proportional to 408,082.60, 612,123.90 and 370,684.90 is: 556,027.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,082.60 : 612,123.90 = 370,684.90 : x
  2. Step 2: Convert to fraction form
    408,082.60/612,123.90 = 370,684.90/x
  3. Step 3: Cross multiply
    408,082.60x = 612,123.90 × 370,684.90
  4. Step 4: Simplify right side
    408,082.60x = 226,905,086,659.11
  5. Step 5: Solve for x
    x = 226,905,086,659.11/408,082.60
  6. Step 6: Final answer
    x = 556,027.35

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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.