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Finding the Fourth Proportional to 61,904.82, 85,433.82 and 38,039.79

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Solution

The fourth proportional to 61,904.82, 85,433.82 and 38,039.79 is: 52,498.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,904.82 : 85,433.82 = 38,039.79 : x
  2. Step 2: Convert to fraction form
    61,904.82/85,433.82 = 38,039.79/x
  3. Step 3: Cross multiply
    61,904.82x = 85,433.82 × 38,039.79
  4. Step 4: Simplify right side
    61,904.82x = 3,249,884,571.70
  5. Step 5: Solve for x
    x = 3,249,884,571.70/61,904.82
  6. Step 6: Final answer
    x = 52,498.09

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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.