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Finding the Fourth Proportional to 325,732.70, 489,036.45 and 207,926.30

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Solution

The fourth proportional to 325,732.70, 489,036.45 and 207,926.30 is: 312,168.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,732.70 : 489,036.45 = 207,926.30 : x
  2. Step 2: Convert to fraction form
    325,732.70/489,036.45 = 207,926.30/x
  3. Step 3: Cross multiply
    325,732.70x = 489,036.45 × 207,926.30
  4. Step 4: Simplify right side
    325,732.70x = 101,683,539,613.64
  5. Step 5: Solve for x
    x = 101,683,539,613.64/325,732.70
  6. Step 6: Final answer
    x = 312,168.66

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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.