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Finding the Fourth Proportional to 240,915.34, 361,424.76 and 72,421.66

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Solution

The fourth proportional to 240,915.34, 361,424.76 and 72,421.66 is: 108,648.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,915.34 : 361,424.76 = 72,421.66 : x
  2. Step 2: Convert to fraction form
    240,915.34/361,424.76 = 72,421.66/x
  3. Step 3: Cross multiply
    240,915.34x = 361,424.76 × 72,421.66
  4. Step 4: Simplify right side
    240,915.34x = 26,174,981,084.30
  5. Step 5: Solve for x
    x = 26,174,981,084.30/240,915.34
  6. Step 6: Final answer
    x = 108,648.05

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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.