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Finding the Fourth Proportional to 156,782.90, 235,174.35 and 154,190.90

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Solution

The fourth proportional to 156,782.90, 235,174.35 and 154,190.90 is: 231,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,782.90 : 235,174.35 = 154,190.90 : x
  2. Step 2: Convert to fraction form
    156,782.90/235,174.35 = 154,190.90/x
  3. Step 3: Cross multiply
    156,782.90x = 235,174.35 × 154,190.90
  4. Step 4: Simplify right side
    156,782.90x = 36,261,744,683.42
  5. Step 5: Solve for x
    x = 36,261,744,683.42/156,782.90
  6. Step 6: Final answer
    x = 231,286.35

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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.