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Finding the Fourth Proportional to 379,489.34, 569,233.46 and 99,006.59

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Solution

The fourth proportional to 379,489.34, 569,233.46 and 99,006.59 is: 148,509.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,489.34 : 569,233.46 = 99,006.59 : x
  2. Step 2: Convert to fraction form
    379,489.34/569,233.46 = 99,006.59/x
  3. Step 3: Cross multiply
    379,489.34x = 569,233.46 × 99,006.59
  4. Step 4: Simplify right side
    379,489.34x = 56,357,860,447.30
  5. Step 5: Solve for x
    x = 56,357,860,447.30/379,489.34
  6. Step 6: Final answer
    x = 148,509.73

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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.