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Finding the Fourth Proportional to 61,767.74, 85,244.74 and 51,678.38

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Solution

The fourth proportional to 61,767.74, 85,244.74 and 51,678.38 is: 71,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,767.74 : 85,244.74 = 51,678.38 : x
  2. Step 2: Convert to fraction form
    61,767.74/85,244.74 = 51,678.38/x
  3. Step 3: Cross multiply
    61,767.74x = 85,244.74 × 51,678.38
  4. Step 4: Simplify right side
    61,767.74x = 4,405,310,066.72
  5. Step 5: Solve for x
    x = 4,405,310,066.72/61,767.74
  6. Step 6: Final answer
    x = 71,320.56

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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.