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Finding the Fourth Proportional to 123,478.89, 185,108.34 and 44,575.56

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Solution

The fourth proportional to 123,478.89, 185,108.34 and 44,575.56 is: 66,823.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,478.89 : 185,108.34 = 44,575.56 : x
  2. Step 2: Convert to fraction form
    123,478.89/185,108.34 = 44,575.56/x
  3. Step 3: Cross multiply
    123,478.89x = 185,108.34 × 44,575.56
  4. Step 4: Simplify right side
    123,478.89x = 8,251,307,916.17
  5. Step 5: Solve for x
    x = 8,251,307,916.17/123,478.89
  6. Step 6: Final answer
    x = 66,823.63

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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.