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Finding the Fourth Proportional to 61,898.81, 85,420.58 and 33,604.47

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Solution

The fourth proportional to 61,898.81, 85,420.58 and 33,604.47 is: 46,374.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,898.81 : 85,420.58 = 33,604.47 : x
  2. Step 2: Convert to fraction form
    61,898.81/85,420.58 = 33,604.47/x
  3. Step 3: Cross multiply
    61,898.81x = 85,420.58 × 33,604.47
  4. Step 4: Simplify right side
    61,898.81x = 2,870,513,149.97
  5. Step 5: Solve for x
    x = 2,870,513,149.97/61,898.81
  6. Step 6: Final answer
    x = 46,374.29

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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.