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Finding the Fourth Proportional to 156,679.40, 235,019.10 and 38,349.20

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Solution

The fourth proportional to 156,679.40, 235,019.10 and 38,349.20 is: 57,523.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,679.40 : 235,019.10 = 38,349.20 : x
  2. Step 2: Convert to fraction form
    156,679.40/235,019.10 = 38,349.20/x
  3. Step 3: Cross multiply
    156,679.40x = 235,019.10 × 38,349.20
  4. Step 4: Simplify right side
    156,679.40x = 9,012,794,469.72
  5. Step 5: Solve for x
    x = 9,012,794,469.72/156,679.40
  6. Step 6: Final answer
    x = 57,523.80

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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.