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Finding the Fourth Proportional to 468,589.78, 702,911.90 and 131,656.69

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Solution

The fourth proportional to 468,589.78, 702,911.90 and 131,656.69 is: 197,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,589.78 : 702,911.90 = 131,656.69 : x
  2. Step 2: Convert to fraction form
    468,589.78/702,911.90 = 131,656.69/x
  3. Step 3: Cross multiply
    468,589.78x = 702,911.90 × 131,656.69
  4. Step 4: Simplify right side
    468,589.78x = 92,543,054,115.61
  5. Step 5: Solve for x
    x = 92,543,054,115.61/468,589.78
  6. Step 6: Final answer
    x = 197,492.69

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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.