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Finding the Fourth Proportional to 603,938.20, 905,904.06 and 154,658.20

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Solution

The fourth proportional to 603,938.20, 905,904.06 and 154,658.20 is: 231,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,938.20 : 905,904.06 = 154,658.20 : x
  2. Step 2: Convert to fraction form
    603,938.20/905,904.06 = 154,658.20/x
  3. Step 3: Cross multiply
    603,938.20x = 905,904.06 × 154,658.20
  4. Step 4: Simplify right side
    603,938.20x = 140,105,491,292.29
  5. Step 5: Solve for x
    x = 140,105,491,292.29/603,938.20
  6. Step 6: Final answer
    x = 231,986.47

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Double scale
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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.