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Finding the Fourth Proportional to 61,869.78, 85,379.85 and 33,574.86

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Solution

The fourth proportional to 61,869.78, 85,379.85 and 33,574.86 is: 46,333.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,869.78 : 85,379.85 = 33,574.86 : x
  2. Step 2: Convert to fraction form
    61,869.78/85,379.85 = 33,574.86/x
  3. Step 3: Cross multiply
    61,869.78x = 85,379.85 × 33,574.86
  4. Step 4: Simplify right side
    61,869.78x = 2,866,616,510.57
  5. Step 5: Solve for x
    x = 2,866,616,510.57/61,869.78
  6. Step 6: Final answer
    x = 46,333.06

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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.