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Finding the Fourth Proportional to 328,658.28, 492,987.42 and 107,042.28

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Solution

The fourth proportional to 328,658.28, 492,987.42 and 107,042.28 is: 160,563.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,658.28 : 492,987.42 = 107,042.28 : x
  2. Step 2: Convert to fraction form
    328,658.28/492,987.42 = 107,042.28/x
  3. Step 3: Cross multiply
    328,658.28x = 492,987.42 × 107,042.28
  4. Step 4: Simplify right side
    328,658.28x = 52,770,497,448.12
  5. Step 5: Solve for x
    x = 52,770,497,448.12/328,658.28
  6. Step 6: Final answer
    x = 160,563.42

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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.