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Finding the Fourth Proportional to 86,792.38, 119,771.90 and 49,066.64

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Solution

The fourth proportional to 86,792.38, 119,771.90 and 49,066.64 is: 67,711.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,792.38 : 119,771.90 = 49,066.64 : x
  2. Step 2: Convert to fraction form
    86,792.38/119,771.90 = 49,066.64/x
  3. Step 3: Cross multiply
    86,792.38x = 119,771.90 × 49,066.64
  4. Step 4: Simplify right side
    86,792.38x = 5,876,804,699.42
  5. Step 5: Solve for x
    x = 5,876,804,699.42/86,792.38
  6. Step 6: Final answer
    x = 67,711.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.